diff --git a/services/etc/param/ohos.para.size b/services/etc/param/ohos.para.size
index bf68781d3188ef98d49100f4f925b6ac5573cc0e..a417ad6d82bafb997a263b73b5ce2fae73b8ab7d 100755
--- a/services/etc/param/ohos.para.size
+++ b/services/etc/param/ohos.para.size
@@ -18,16 +18,7 @@ startup_param=40960
 persist_param=40960
 const_param=40960
 persist_sys_param=4096
-hw_sc_param=512
-hw_sc_build_os_param=512
-init_param=512
-init_svc_param=512
-const_postinstall_param=512
-const_postinstall_fstab_param=512
-const_allow_param=512
-const_allow_mock_param=512
 devinfo_public_param=30720
-security_param=512
 sys_param=4096
 bootevent_param=4096
 startup_init_param=40960
diff --git a/services/param/include/param_osadp.h b/services/param/include/param_osadp.h
index 8a1260643ef9a61dc6c7381aad215c72e80f6e90..3fdbfe6aedb25131f128142a417fc369b30e19b3 100755
--- a/services/param/include/param_osadp.h
+++ b/services/param/include/param_osadp.h
@@ -45,7 +45,15 @@ extern "C" {
 #endif
 
 #define PARAM_WORKSPACE_INVALID ((uint32_t)-1)
-#define PARAM_WORKSPACE_MIN (512)
+#define PARAM_WORKSPACE_MIN (1024)
+/*
+    length for parameter = node size + data size
+    xxxx.xxxx.xxxx.xxxx
+    node size:
+    24 * (count(.) + 1) + strlen(xxxx.xxxx.xxxx.xxxx)
+    data size
+    strlen(xxxx.xxxx.xxxx.xxxx) + 96
+*/
 #if (defined __LITEOS_A__ || defined __LITEOS_M__)
 #define DAC_DEFAULT_MODE 0777
 #ifdef STARTUP_INIT_TEST