It is possible that the sleep bar is caused by roundworms in the intestine, or it may be caused by excessive excitement during the day, and it is not excluded that there are dental caries, plant nerve disorders and other reasons. 1. Roundworm: If you don’t pay attention to personal hygiene and dietary hygiene, you will be easily infected by roundworm, and the toxin produced by roundworm will stimulate the nerve, which will lead to nerve excitement, and then you will grind your teeth, just like in the case of baring your mouth. Need to go to the hospital to do a stool test, such as the presence of worm eggs in the stool, you need to take albendazole and other deworming drugs to treat; 2, excessive excitement during the day: such as excessive excitement during the day, the nerves are stimulated at night when sleeping will also appear baring the mouth. This situation generally does not affect the body, just pay attention to not too excited before going to bed; 3, dental caries: usually do not pay attention to oral hygiene or eat too sweet food before going to bed at night, it will lead to tooth decay, the root of the tooth will be itchy, painful, etc., will also lead to baring the mouth at night when sleeping, as chewing things. It is necessary to go to the stomatology department of the hospital, and the professional doctor will clean the decayed teeth, then apply amoxicillin and other drugs for anti-inflammatory treatment, and repair the damaged teeth; 4, plant nerve dysfunction: such as overwork, irregular work and rest, staying up late will lead to plant nerve dysfunction, which will also lead to the situation of sleeping with the mouth, and can take nerve-nourishing drugs for treatment, such as vitamin B12, methylcobalamin, etc.