diff --git a/services/etc/param/ohos.para.size b/services/etc/param/ohos.para.size
index 70c969e28..33a8c3c90 100755
--- a/services/etc/param/ohos.para.size
+++ b/services/etc/param/ohos.para.size
@@ -27,3 +27,4 @@ ohos_boot_param = 8192
 bluetooth_param = 8192
 hiviewdfx_hiview_param = 2048
 telephony_param = 20480
+edm_writable_param = 4096