diff --git a/interfaces/kits/picker/picker.js b/interfaces/kits/picker/picker.js
index 6b1177c3156640039916c43fbe57339650257843..20205b42351c3f089853915f790e8c38ab6bdd20 100644
--- a/interfaces/kits/picker/picker.js
+++ b/interfaces/kits/picker/picker.js
@@ -218,7 +218,7 @@ function parseDocumentPickerSelectOption(args, action) {
 
   if (args.length > ARGS_ZERO && typeof args[ARGS_ZERO] === 'object') {
     let option = args[ARGS_ZERO];
-    config.parameters.key_select_mode = option.selectMode;
+    config.parameters.keySelectMode = option.selectMode;
     console.log('parseDocumentPickerSelectOption: ' + option.selectMode);
 
     if ((option.maxSelectNumber !== undefined) && option.maxSelectNumber > 0) {