diff --git a/blocksuite/docs/api/@blocksuite/store/README.md b/blocksuite/docs/api/@blocksuite/store/README.md
index 89d88871c8..c596a87431 100644
--- a/blocksuite/docs/api/@blocksuite/store/README.md
+++ b/blocksuite/docs/api/@blocksuite/store/README.md
@@ -20,3 +20,7 @@
 
 - [Store](classes/Store.md)
 - [StoreSlots](interfaces/StoreSlots.md)
+
+## Other
+
+- [Schema](classes/Schema.md)
diff --git a/blocksuite/docs/api/@blocksuite/store/classes/Schema.md b/blocksuite/docs/api/@blocksuite/store/classes/Schema.md
new file mode 100644
index 0000000000..ffe1c22182
--- /dev/null
+++ b/blocksuite/docs/api/@blocksuite/store/classes/Schema.md
@@ -0,0 +1,297 @@
+[**BlockSuite API Documentation**](../../../README.md)
+
+***
+
+[BlockSuite API Documentation](../../../README.md) / [@blocksuite/store](../README.md) / Schema
+
+# Class: Schema
+
+Represents a schema manager for block flavours and their relationships.
+Provides methods to register, validate, and query block schemas.
+
+## Properties
+
+### flavourSchemaMap
+
+> `readonly` **flavourSchemaMap**: `Map`\<`string`, \{ `model`: \{ `children?`: `string`[]; `flavour`: `string`; `isFlatData?`: `boolean`; `parent?`: `string`[]; `props?`: (...`args`) => `Record`\<`string`, `any`\>; `role`: `string`; `toModel?`: (...`args`) => `BlockModel`\<`object`\>; \}; `transformer?`: (...`args`) => `BaseBlockTransformer`\<`object`\>; `version`: `number`; \}\>
+
+A map storing block flavour names to their corresponding schema definitions.
+
+## Accessors
+
+### versions
+
+#### Get Signature
+
+> **get** **versions**(): `object`
+
+Returns an object mapping each registered flavour to its version number.
+
+##### Returns
+
+`object`
+
+## Methods
+
+### get()
+
+> **get**(`flavour`): `undefined` \| \{ `model`: \{ `children?`: `string`[]; `flavour`: `string`; `isFlatData?`: `boolean`; `parent?`: `string`[]; `props?`: (...`args`) => `Record`\<`string`, `any`\>; `role`: `string`; `toModel?`: (...`args`) => `BlockModel`\<`object`\>; \}; `transformer?`: (...`args`) => `BaseBlockTransformer`\<`object`\>; `version`: `number`; \}
+
+Retrieves the schema for a given block flavour.
+
+#### Parameters
+
+##### flavour
+
+`string`
+
+The block flavour name.
+
+#### Returns
+
+`undefined` \| \{ `model`: \{ `children?`: `string`[]; `flavour`: `string`; `isFlatData?`: `boolean`; `parent?`: `string`[]; `props?`: (...`args`) => `Record`\<`string`, `any`\>; `role`: `string`; `toModel?`: (...`args`) => `BlockModel`\<`object`\>; \}; `transformer?`: (...`args`) => `BaseBlockTransformer`\<`object`\>; `version`: `number`; \}
+
+The corresponding BlockSchemaType or undefined if not found.
+
+***
+
+### isValid()
+
+> **isValid**(`child`, `parent`): `boolean`
+
+Checks if the child flavour is valid under the parent flavour.
+
+#### Parameters
+
+##### child
+
+`string`
+
+The child block flavour name.
+
+##### parent
+
+`string`
+
+The parent block flavour name.
+
+#### Returns
+
+`boolean`
+
+True if the relationship is valid, false otherwise.
+
+***
+
+### register()
+
+> **register**(`blockSchema`): `Schema`
+
+Registers an array of block schemas into the schema manager.
+
+#### Parameters
+
+##### blockSchema
+
+`object`[]
+
+An array of block schema definitions to register.
+
+#### Returns
+
+`Schema`
+
+The Schema instance (for chaining).
+
+***
+
+### safeValidate()
+
+> **safeValidate**(`flavour`, `parentFlavour?`, `childFlavours?`): `boolean`
+
+Safely validates the schema relationship for a given flavour, parent, and children.
+Returns true if valid, false otherwise (does not throw).
+
+#### Parameters
+
+##### flavour
+
+`string`
+
+The block flavour to validate.
+
+##### parentFlavour?
+
+`string`
+
+The parent block flavour (optional).
+
+##### childFlavours?
+
+`string`[]
+
+The child block flavours (optional).
+
+#### Returns
+
+`boolean`
+
+True if the schema relationship is valid, false otherwise.
+
+***
+
+### toJSON()
+
+> **toJSON**(): `object`
+
+Serializes the schema map to a plain object for JSON output.
+
+#### Returns
+
+`object`
+
+An object mapping each flavour to its role, parent, and children.
+
+***
+
+### validate()
+
+> **validate**(`flavour`, `parentFlavour?`, `childFlavours?`): `void`
+
+Validates the schema relationship for a given flavour, parent, and children.
+Throws SchemaValidateError if invalid.
+
+#### Parameters
+
+##### flavour
+
+`string`
+
+The block flavour to validate.
+
+##### parentFlavour?
+
+`string`
+
+The parent block flavour (optional).
+
+##### childFlavours?
+
+`string`[]
+
+The child block flavours (optional).
+
+#### Returns
+
+`void`
+
+#### Throws
+
+If the schema relationship is invalid.
+
+***
+
+### validateSchema()
+
+> **validateSchema**(`child`, `parent`): `void`
+
+Validates the relationship between a child and parent schema.
+Throws if the relationship is invalid.
+
+#### Parameters
+
+##### child
+
+The child block schema.
+
+###### model
+
+\{ `children?`: `string`[]; `flavour`: `string`; `isFlatData?`: `boolean`; `parent?`: `string`[]; `props?`: (...`args`) => `Record`\<`string`, `any`\>; `role`: `string`; `toModel?`: (...`args`) => `BlockModel`\<`object`\>; \} = `...`
+
+###### model.children?
+
+`string`[] = `ContentSchema`
+
+###### model.flavour
+
+`string` = `FlavourSchema`
+
+###### model.isFlatData?
+
+`boolean` = `...`
+
+###### model.parent?
+
+`string`[] = `ParentSchema`
+
+###### model.props?
+
+(...`args`) => `Record`\<`string`, `any`\> = `...`
+
+###### model.role
+
+`string` = `RoleSchema`
+
+###### model.toModel?
+
+(...`args`) => `BlockModel`\<`object`\> = `...`
+
+###### transformer?
+
+(...`args`) => `BaseBlockTransformer`\<`object`\> = `...`
+
+###### version
+
+`number` = `...`
+
+##### parent
+
+The parent block schema.
+
+###### model
+
+\{ `children?`: `string`[]; `flavour`: `string`; `isFlatData?`: `boolean`; `parent?`: `string`[]; `props?`: (...`args`) => `Record`\<`string`, `any`\>; `role`: `string`; `toModel?`: (...`args`) => `BlockModel`\<`object`\>; \} = `...`
+
+###### model.children?
+
+`string`[] = `ContentSchema`
+
+###### model.flavour
+
+`string` = `FlavourSchema`
+
+###### model.isFlatData?
+
+`boolean` = `...`
+
+###### model.parent?
+
+`string`[] = `ParentSchema`
+
+###### model.props?
+
+(...`args`) => `Record`\<`string`, `any`\> = `...`
+
+###### model.role
+
+`string` = `RoleSchema`
+
+###### model.toModel?
+
+(...`args`) => `BlockModel`\<`object`\> = `...`
+
+###### transformer?
+
+(...`args`) => `BaseBlockTransformer`\<`object`\> = `...`
+
+###### version
+
+`number` = `...`
+
+#### Returns
+
+`void`
+
+#### Throws
+
+If the relationship is invalid.
diff --git a/blocksuite/docs/api/@blocksuite/store/classes/Store.md b/blocksuite/docs/api/@blocksuite/store/classes/Store.md
index a21174d56f..936be7e2c5 100644
--- a/blocksuite/docs/api/@blocksuite/store/classes/Store.md
+++ b/blocksuite/docs/api/@blocksuite/store/classes/Store.md
@@ -1035,13 +1035,13 @@ Get the Doc instance for current store.
 
 #### Get Signature
 
-> **get** **schema**(): `Schema`
+> **get** **schema**(): [`Schema`](Schema.md)
 
-Get the Schema instance of the store.
+Get the [Schema](Schema.md) instance of the store.
 
 ##### Returns
 
-`Schema`
+[`Schema`](Schema.md)
 
 ***
 
diff --git a/blocksuite/framework/store/src/schema/schema.ts b/blocksuite/framework/store/src/schema/schema.ts
index 744c4ba667..a35df93eec 100644
--- a/blocksuite/framework/store/src/schema/schema.ts
+++ b/blocksuite/framework/store/src/schema/schema.ts
@@ -4,9 +4,25 @@ import { SCHEMA_NOT_FOUND_MESSAGE } from '../consts.js';
 import { BlockSchema, type BlockSchemaType } from '../model/index.js';
 import { SchemaValidateError } from './error.js';
 
+/**
+ * Represents a schema manager for block flavours and their relationships.
+ * Provides methods to register, validate, and query block schemas.
+ */
 export class Schema {
+  /**
+   * A map storing block flavour names to their corresponding schema definitions.
+   */
   readonly flavourSchemaMap = new Map<string, BlockSchemaType>();
 
+  /**
+   * Safely validates the schema relationship for a given flavour, parent, and children.
+   * Returns true if valid, false otherwise (does not throw).
+   *
+   * @param flavour - The block flavour to validate.
+   * @param parentFlavour - The parent block flavour (optional).
+   * @param childFlavours - The child block flavours (optional).
+   * @returns True if the schema relationship is valid, false otherwise.
+   */
   safeValidate = (
     flavour: string,
     parentFlavour?: string,
@@ -20,10 +36,25 @@ export class Schema {
     }
   };
 
+  /**
+   * Retrieves the schema for a given block flavour.
+   *
+   * @param flavour - The block flavour name.
+   * @returns The corresponding BlockSchemaType or undefined if not found.
+   */
   get(flavour: string) {
     return this.flavourSchemaMap.get(flavour);
   }
 
+  /**
+   * Validates the schema relationship for a given flavour, parent, and children.
+   * Throws SchemaValidateError if invalid.
+   *
+   * @param flavour - The block flavour to validate.
+   * @param parentFlavour - The parent block flavour (optional).
+   * @param childFlavours - The child block flavours (optional).
+   * @throws {SchemaValidateError} If the schema relationship is invalid.
+   */
   validate = (
     flavour: string,
     parentFlavour?: string,
@@ -71,6 +102,9 @@ export class Schema {
     validateChildren();
   };
 
+  /**
+   * Returns an object mapping each registered flavour to its version number.
+   */
   get versions() {
     return Object.fromEntries(
       Array.from(this.flavourSchemaMap.values()).map(
@@ -79,6 +113,13 @@ export class Schema {
     );
   }
 
+  /**
+   * Checks if two flavours match, using minimatch for wildcard support.
+   *
+   * @param childFlavour - The child block flavour.
+   * @param parentFlavour - The parent block flavour.
+   * @returns True if the flavours match, false otherwise.
+   */
   private _matchFlavour(childFlavour: string, parentFlavour: string) {
     return (
       minimatch(childFlavour, parentFlavour) ||
@@ -86,6 +127,15 @@ export class Schema {
     );
   }
 
+  /**
+   * Checks if two values match as either flavours or roles, supporting role syntax (e.g., '@role').
+   *
+   * @param childValue - The child value (flavour or role).
+   * @param parentValue - The parent value (flavour or role).
+   * @param childRole - The actual role of the child.
+   * @param parentRole - The actual role of the parent.
+   * @returns True if the values match as flavours or roles, false otherwise.
+   */
   private _matchFlavourOrRole(
     childValue: string,
     parentValue: string,
@@ -112,6 +162,13 @@ export class Schema {
     return this._matchFlavour(childValue, parentValue);
   }
 
+  /**
+   * Validates if the parent schema is a valid parent for the child schema.
+   *
+   * @param child - The child block schema.
+   * @param parent - The parent block schema.
+   * @returns True if the parent is valid for the child, false otherwise.
+   */
   private _validateParent(
     child: BlockSchemaType,
     parent: BlockSchemaType
@@ -169,6 +226,14 @@ export class Schema {
     });
   }
 
+  /**
+   * Validates the role relationship between child and parent schemas.
+   * Throws if the child is a root block but has a parent.
+   *
+   * @param child - The child block schema.
+   * @param parent - The parent block schema.
+   * @throws {SchemaValidateError} If the child is a root block with a parent.
+   */
   private _validateRole(child: BlockSchemaType, parent: BlockSchemaType) {
     const childRole = child.model.role;
     const childFlavour = child.model.flavour;
@@ -182,6 +247,13 @@ export class Schema {
     }
   }
 
+  /**
+   * Checks if the child flavour is valid under the parent flavour.
+   *
+   * @param child - The child block flavour name.
+   * @param parent - The parent block flavour name.
+   * @returns True if the relationship is valid, false otherwise.
+   */
   isValid(child: string, parent: string) {
     const childSchema = this.flavourSchemaMap.get(child);
     const parentSchema = this.flavourSchemaMap.get(parent);
@@ -196,6 +268,12 @@ export class Schema {
     }
   }
 
+  /**
+   * Registers an array of block schemas into the schema manager.
+   *
+   * @param blockSchema - An array of block schema definitions to register.
+   * @returns The Schema instance (for chaining).
+   */
   register(blockSchema: BlockSchemaType[]) {
     blockSchema.forEach(schema => {
       BlockSchema.parse(schema);
@@ -204,6 +282,11 @@ export class Schema {
     return this;
   }
 
+  /**
+   * Serializes the schema map to a plain object for JSON output.
+   *
+   * @returns An object mapping each flavour to its role, parent, and children.
+   */
   toJSON() {
     return Object.fromEntries(
       Array.from(this.flavourSchemaMap.values()).map(
@@ -219,6 +302,14 @@ export class Schema {
     );
   }
 
+  /**
+   * Validates the relationship between a child and parent schema.
+   * Throws if the relationship is invalid.
+   *
+   * @param child - The child block schema.
+   * @param parent - The parent block schema.
+   * @throws {SchemaValidateError} If the relationship is invalid.
+   */
   validateSchema(child: BlockSchemaType, parent: BlockSchemaType) {
     this._validateRole(child, parent);