Cirrhosis with bad breath may be caused by physiological factors, or it may be caused by oral infection, cirrhosis and other disease factors. 1. Physiological factors: patients with cirrhosis who have eaten foods with irritating odor such as garlic and green onion will have bad breath, and at the same time, not paying attention to oral hygiene can also cause bad breath. 2. Disease factors: patients with cirrhosis may have liver odor, resulting in halitosis; moreover, patients with cirrhosis are very prone to infections, which may cause halitosis when oral infections occur. Cirrhosis patients with halitosis need to go to the hospital after eliminating physiological factors, and ask the doctor to make a judgment and clarify the cause of the disease.