Making brown rice puree got these bran can't be blended. Is it ok? Need to filter? Cause baby can't digest too come out from poo.

Those brown bits are probably from the husks of the brown rice, which are packed with nutrients and vitamins. So no worries on that. Brown rice is generally very easy on baby's digestive system.

it is okay. Do not need to filter. As long as it can come out from his poop, nothing to worry about.