I am using icl7107 with this arrangements to built digital power supply but it not work properly . If any falt in given circuit please tell me . thanks

 

It's not a PSU, it's Digital Voltmeter.
and you need post the complete schematic with the proper values and component no.s that you are using if you want any one to help.
We are hear to help but in order to do that we need all the information.

So re up the schema with the values and a complete explanation on what the problem you are having.