diff --git a/multimodalinput/kits/c/input/oh_input_manager.h b/multimodalinput/kits/c/input/oh_input_manager.h
index 3934be3b9a6cb19b0627d706c5bd9dc89ee03dfb..2549cd388baec152e6786551ef175a3ac394dd5c 100644
--- a/multimodalinput/kits/c/input/oh_input_manager.h
+++ b/multimodalinput/kits/c/input/oh_input_manager.h
@@ -1837,6 +1837,19 @@ Input_Result OH_Input_GetDeviceAddress(Input_DeviceInfo *deviceInfo, char **addr
  * @since 15
  */
 Input_Result OH_Input_GetFunctionKeyState(int32_t keyCode, int32_t *state);
+
+/**
+ * @brief Queries the maximum number of touch points supported by the current device.
+ *      If -1 is returned, the number is unknown.
+ * @param count Maximum number of touch points supported.
+ * @return one of result code:
+ *         {@link INPUT_SUCCESS} if the operation is successful.
+ *         {@link INPUT_PARAMETER_ERROR} if count is a null pointer.
+ * @syscap SystemCapability.MultimodalInput.Input.Core
+ * @since 20
+*/
+Input_Result OH_Input_QueryMaxTouchPoints(int32_t *count);
+
 #ifdef __cplusplus
 }
 #endif