Hello sir,, if it burns while peeing, it is most commonly due to urinary tract infection(UTI) . You need to get urine testing done to confirm that. If testing tells you infection, you need to be start on antibiotics,, urinary alkalizer (to relive burning sensation). Consult physician he will prescribe that. Avoid coffee, tea which irritates urinary passage more, drink plenty of water which as natural flushing action on UTI.