Which department to visit for bad breath?

Patients with bad breath should go to the stomatology department of the hospital for a detailed examination, considering that it may be caused by residue on the teeth or calculus; secondly, it may also be symptoms caused by excessive stomach fire. If there is residue in the mouth, you can go to the hospital. Carry out tooth cleaning treatment to relieve symptoms; if it is caused by gastrointestinal factors, it is recommended to improve diet or take relevant drugs for conditioning.