Weird color patch comes , which does not even get rid off while using 'Color Doge' on brush , after little over doing . can this be fixed . can krita 'Color Doge' can work like Photoshop. which automatically pick's Brighter Color while using Color Doge on to a Color.

Which version of krita are you using and which operating system?

I've just tried using Colour Dodge mode on the Basic_2 Opacity brush and I don't see any green patches.
Can you post or provide a link to a full screen screenshot that shows this happening?

https://ibb.co/w6hHfwc
https://ibb.co/dr14r1H

2 nd photo with color dodge on it , when i little over do it (Brush stroke) this is what happens . and it does not go away , if i try to paint over it . i am using Krita 4.4.1 and win 10.

Looks like you enabled soft-proofing. And do you really need to work in 16 bit floating point? If you do, you should have a working OCIO configuration set up.

what should i do to get rid of it .

First, answer my questions?

* Have you enabled softproofing?
* Are you intentionally using 16 bit floating point in this image
* And have you setup your ocio configuration correctly for working on this image?

Thank's for the help , it got fixed 1st- turn off soft proofing (ctrl + Y) .2nd - Goto ->Image -> properties -> Image color Space -> model- RGB , depth - 16 bit integer ( NOt float value). Done. Again Thank's for Help.