Myasthenia gravis is an autoimmune disease in which antibody-mediated damage to acetylcholine receptors at the neuromuscular junction is predominant. The disease is characterized by easy fatigue of the affected skeletal muscles, but there is a degree of recovery after rest, so the disease is often light in the morning and heavy in the afternoon. In mild cases, only symptoms of eye muscle damage such as droopy eyes, inflexible eye rotation, diplopia and strabismus are observed; in heavy cases, symptoms such as general fatigue, weakness, weakness in chewing, difficulty in swallowing, choking on water and even difficulty in breathing are observed, and some patients may have muscle atrophy. Some patients may have life-threatening myasthenia gravis crisis due to various reasons. The following are the contraindications to medication, diet and factors that cause recurrence of the disease in patients with myasthenia gravis: I. Medication contraindications: myasthenia gravis prohibits the following drugs: 1. Antibiotics: streptomycin, kanamycin, gentamicin, neomycin, tetracycline, jessamine, ampicillin, tobramycin, polymyxin B and polymyxin E, oxytetracycline, bacteriophage, haloperidol, cipro, etc. So far it has not been found to aggravate the disease: penicillin, chloramphenicol, erythromycin, dactinomycin, spiramycin, vancomycin and cephalosporin antibiotics. 2, cardiovascular disease: lidocaine, quinidine, procainamide, insulin, insulin, Medoxin, aminocardium, isoproterenol, mithiafen, slow pulse, etc. 3, anti-epileptic drugs: phenytoin sodium, ethosuximide, trimethoprim, etc. 4, antipsychotics: lithium carbonate, phenelzine, chlorpromazine, clonidine, Valium. 5, anesthetics: morphine, chloroform, arrow poison, ether, succinylcholine, ammonium formylcholine chloride. If anesthesia is necessary for surgery, choose halothane, nitrous oxide, cyclopropane, succinylcholine, etc. 6, penicillamine, chloroquine, quinine, fenagan, choline chloride and carnitine can not be used. 7.Toadstools and their Chinese medicines such as Rokusan Pills and Throat Pills. When there is an infection, penicillin or Pioneer’s Vaccin V can be used. 8.Chinese herbal medicines with cold sexual taste. Second, dietary guidance: eat more light and nutritious food and animal and vegetable protein such as tofu, chicken, duck, fish, meat, etc., avoid spicy food. We have observed that the main factors that cause recurrence of myasthenia gravis are cold, menstrual flow, childbirth, surgery, mental stimulation, overexertion, contraindicated drugs, cold and cold, and excessive intercourse, all of which can aggravate the disease and even induce critical symptoms. Except for menstrual flow which is physiological, all other factors should be prevented or avoided as much as possible. In addition, it is worth paying special attention to the hormones and anticholinesterase drugs, must be under the guidance of the doctor, slowly decreasing, never elements to stop decreasing, so as not to aggravate the myasthenia gravis condition and induce the occurrence of critical signs. In conclusion, myasthenia gravis is a curable disease, but also a difficult disease, as long as early diagnosis, appropriate treatment, the majority of patients can improve, and at least half of the patients after standardized systemic treatment, can achieve self-care, normal work of complete remission or drug remission state, and even can not relapse for many years. Patience and persistence in treatment are necessary to keep the body and mind happy and to build up confidence in order to recover slowly. After remission, it is necessary to consolidate treatment for about one year to prevent recurrence.