diff --git a/api/@internal/component/ets/common.d.ts b/api/@internal/component/ets/common.d.ts
index 375cce70019cde917335ecc31736b230e77e056f..84a51d07d5d48645557dc6d022c2eef49235e255 100644
--- a/api/@internal/component/ets/common.d.ts
+++ b/api/@internal/component/ets/common.d.ts
@@ -15779,6 +15779,43 @@ declare interface SpringBackAction {
   springBack: VoidCallback;
 }
 
+
+/**
+ * Defines the animator range of start and end property.
+ *
+ * @typedef { [SheetSize | Length] } singleLengthDetents
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @crossplatform
+ * @atomicservice
+ * @since 20
+ * @arkts 1.2
+ */
+declare type SingleLengthDetent = [SheetSize | Length];
+
+/**
+ * Defines the animator range of start and end property.
+ *
+ * @typedef { [(SheetSize | Length), SheetSize | Length | undefined] } doubleLengthDetents
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @crossplatform
+ * @atomicservice
+ * @since 20
+ * @arkts 1.2
+ */
+declare type DoubleLengthDetents = [(SheetSize | Length), SheetSize | Length | undefined];
+
+/**
+ * Defines the animator range of start and end property.
+ *
+ * @typedef { [(SheetSize | Length), SheetSize | Length | undefined, SheetSize | Length | undefined] } tripleLengthDetents
+ * @syscap SystemCapability.ArkUI.ArkUI.Full
+ * @crossplatform
+ * @atomicservice
+ * @since 20
+ * @arkts 1.2
+ */
+declare type TripleLengthDetents = [(SheetSize | Length), SheetSize | Length | undefined, SheetSize | Length | undefined];
+
 /**
  * Component sheet options
  *
@@ -15886,14 +15923,14 @@ declare interface SheetOptions extends BindOptions {
   /**
    * Defines sheet detents
    *
-   * @type { ?[(SheetSize | Length), (SheetSize | Length)?, (SheetSize | Length)?] }
+   * @type { SingleLengthDetent | DoubleLengthDetents | TripleLengthDetents }
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @crossplatform
    * @atomicservice
    * @since 20
    * @arkts 1.2
    */
-  detents?: [(SheetSize | Length), SheetSize | Length | undefined, SheetSize | Length | undefined];
+  detents?: SingleLengthDetent | DoubleLengthDetents | TripleLengthDetents;
 
   /**
    * Defines sheet background blur Style