diff --git a/services/etc/param/ohos.para.size b/services/etc/param/ohos.para.size
index 97c2db24069f241ae7b5c52961e7b402a7f2f2c7..fd04eb92bc03427982a1c558eafde5e39f817ad8 100755
--- a/services/etc/param/ohos.para.size
+++ b/services/etc/param/ohos.para.size
@@ -48,4 +48,4 @@ useriam_fwkready_param = 2048
 custom_param = 2048
 persist_audio_param = 4096
 update_updater_param = 4096
-bms_param = 2048
+bms_param = 20480