diff --git a/startup/init/syscap/include/syscap_ndk.h b/startup/init/syscap/include/syscap_ndk.h
index a52f30603aa88f8ca59b64303c3e7c1d81b344dc..d4a576c1806428922c785e039be8cf97e099a35f 100644
--- a/startup/init/syscap/include/syscap_ndk.h
+++ b/startup/init/syscap/include/syscap_ndk.h
@@ -42,6 +42,13 @@ extern "C" {
 #endif
 #endif
 
+/**
+ * @brief Queries whether a device supports a specified SystemCapability.
+ * @param cap SystemCapability whether supported
+ * @return true - Supports the specified SystemCapability.
+ *     false - The specified SystemCapability is not supported.
+ * @since 8
+ */
 bool canIUse(const char *cap);
 
 #ifdef __cplusplus