Children with thick white tongue and bad breath need to identify the cause of the active symptomatic treatment, common dietary adjustments, medication, oral hygiene and other methods to improve, specific analysis is as follows: 1. Dietary adjustments: due to dietary disorders resulting in damage to the spleen and stomach, thus triggering the symptoms of accumulation of food, white tongue, bad breath, it is recommended that children to develop the habit of regular, quantitative, regular meals, and reduce the intake of meat food, eat a light diet, reduce the burden on the digestive system. 2. medication: children with thick white tongue and bad breath may be caused by indigestion, it is recommended to take probiotics such as bacillus subtilis under the guidance of a doctor, allergic to drugs are prohibited to take. 2. Oral hygiene: oral hygiene can also be a thick white tongue, bad breath, it is recommended to develop the habit of brushing teeth in the morning and evening, rinsing the mouth after meals. Children with thick white tongue and bad breath may also have other reasons, it is recommended to go to the hospital in time for relevant examinations, clear causes and actively treat the symptoms.