diff --git a/README.md b/README.md
index 7076161c134526741f622ba416fa01b10a37f1f9..05e0c88ae9238324555e9c2ecc8aa507d475278d 100644
--- a/README.md
+++ b/README.md
@@ -22,14 +22,13 @@ Needs react-native >= 0.14.2
###Documentation
####Props
-- style style of picker
+- style style of picker, you can set width and height of picker in this prop
- pickerBtnText string, tool bar's confirm btn text
- pickerCancelBtnText string, tool bar's cancel ben text
- pickerBtnStyle textStylePropType, tool bar's btn style
- pickerToolBarStyle viewStylePropType, tool bar's style
-- pickerWidth number, width of picker
-- pickerHeight number, height of picker
- showDuration number, animation of picker
+- showMask boolean, default to be false, cancel the picker by tapping in the rest of the screen support when setted to be true
- pickerTitle string, title of picker
- pickerTitleStyle textStylePropType, style of title
- pickerData array
@@ -58,8 +57,11 @@ Needs react-native >= 0.14.2
import Picker from 'react-native-picker'