Sleeping teeth biting tongue may be related to poor sleeping posture, upper and lower teeth bite not tightly, larger tongue and other factors. 1. Bad sleeping posture: some people may develop bad sleeping posture, which may lead to tongue biting phenomenon and can be improved by timely correction. 2. Upper and lower teeth do not bite tightly: some people’s teeth are deformed during the growth process, resulting in the upper and lower teeth can not completely bite together, and may also appear in the case of sleeping teeth biting the tongue. 3. Larger tongue: Some people have a larger tongue or a swollen tongue due to tongue damage and inflammation, which may lead to tongue biting in sleep. After excluding the influence of physiological factors, it is recommended that patients go to the hospital to check the cause of the disease, according to the doctor’s advice for targeted treatment, do not use private medication, so as not to jeopardize the body.