Is somking is more harmful in stomach ulcer, if yas and not quit smoke then what is the effect !

Yes, very harmful: If you have an ulcer it is less likely to heal if you are a smoker. Smoking is of course also very harmful if you don't have a stomach ulcer. So many reasons to quit! You can quit if you make a committed effort and use the help of your doc, family, friends, & FDA approved smoking cessation aids. Don't worry if you relapse, just keep trying! Most smokers require 3-5 quit attempt to win the battle.