White tongue with bad breath in the morning may be caused with bad living habits, periodontitis and intestinal problems. 1. Bad habits: patients do not do a good job of oral cleaning in their daily lives, when brushing their teeth without cleaning the tongue, resulting in soft dirt on the tongue, the accumulation of food decay will appear after the tongue white, bad breath, patients should adhere to the cleaning of the oral cavity. 2. Periodontitis: patients with long-term periodontitis will have a large number of bacteria around the gums, patients will have a white tongue, bad breath, accompanied by loose teeth, and the possibility of bleeding. 3. Gastrointestinal problems: people with gastrointestinal problems will have dysbiosis, inducing indigestion, and food will reflux into the mouth, resulting in white tongue and bad breath. When the patient through the improvement of lifestyle, and did not get relief, should promptly seek medical attention, under the guidance and advice of the doctor for treatment.