when i am checking the checkbox on top of that it showing on/off.please refer below image 
how to resolve this
Can you give us a little more context? Where is this checkbox? Can you post a screenshot of the builder properties for that field?
If I had to guess - I’d say there is a custom field renderer on the field that is adding both the text representation of the boolean feield as well as the checkbox renderer.
But that’s a guess.
