When the toothache is too painful to sleep at night, treatment such as saline rinse, changing position, cold water rinse and medication can be taken, as follows: 1.Saline rinse: when deep cavity is formed in the crown of the tooth, large pieces of decaying matter can be removed, after applying saline rinse, clove oil cotton ball can be placed to soothe and relieve pain, when food fiber is embedded in the adjacent surface of the tooth, toothpick or flosser can be applied to remove and then apply iodine glycerin, etc. 2.Change position: patients who originally lie down can sit up or walk back and forth. The patient can sit up or walk back and forth to promote the inflammatory secretions in the pulp cavity to spread around the root through the apical foramen to reduce the pressure in the pulp cavity and relieve the pain. 3.Rinsing with cold water: The patient can rinse with cold water or place ice cubes on the jaw face to promote capillary constriction and reduce the volume of the pulp tissue to reduce the extrusion on the lateral wall of the pulp cavity to relieve the pain. 4.Use of drugs: When the pain is unbearable, you can take diclofenac sodium and other drugs. Drugs.