Whether the pain in the left side of the face bite muscle can be self-healed should be judged comprehensively according to clinical symptoms and signs, and cannot be generalized. Pain in the bite muscle usually includes both physiological and pathological factors, and requires prompt consultation at a hospital dentistry department for a clear diagnosis by a doctor. If the pain is shallow, simply due to excessive chewing of coarse and hard food or grinding of teeth at night and clenching of teeth during the day, and muscle fatigue, through proper rest and avoidance of triggering factors, the pain symptoms will gradually ease and can usually heal on their own. However, if it is caused by pathological factors, such as severe muscle inflammation, interstitial infection, or the presence of a tumor, it cannot heal itself and requires standardized treatment under the guidance of a doctor. In daily life, if you have pain in the bite muscle, you should eat soft and delicate food to reduce the burden on the bite muscle, and avoid cold and spicy stimulating diet to avoid re-stimulating the bite muscle and aggravating the pain. But the most important thing is to go to the hospital for systematic examination to exclude other causes of pain, such as trigeminal neuralgia or temporal joint disorder, so as to treat the cause.