As a disease with neuromuscular transmission disorder, myasthenia gravis should be avoided by using drugs that can aggravate the neuromuscular transmission disorder. If they must be used, they should be used under the guidance of a medical professional after repeated deliberation and weighing the pros and cons. Some common drugs that should be avoided in daily and clinical practice in patients with severe muscle are listed. ① Prohibited anti-infective drugs: streptomycin, dihydrostreptomycin, kanamycin, gentamicin, neomycin, viomycin, tobramycin, bacitracin, polymyxin, tetracycline, ampicillin, erythromycin, etc.; ② Prohibited cardiovascular drugs include: lidocaine, quinidine, benzathine, cardioplegia, isoptin, etc.; ③ Prohibited antiepileptic drugs include: phenytoin sodium, ethosuximide, etc.; ④ Prohibited anti (4) Prohibited antipsychotic drugs include: chlorpromazine, diazepam, clonazepam, etc.; (5) Prohibited narcotic drugs include: morphine, dulcolax, etc.; (6) Caution with hormonal drugs: glucocorticoids and thyroxine can temporarily aggravate MG symptoms, although glucocorticoids are effective drugs for the treatment of heavy muscle, but the use of caution, under the advice of a professional physician, the use of close observation, if necessary, the need to adjust the cholinesterase inhibitor (7) Other prohibited drugs include: penicillamine, chloroquine, etc. It should be noted that some traditional Chinese medicine and proprietary Chinese medicines should be avoided (e.g. Toadstool and some of its proprietary Chinese medicines such as Liu Shen Wan, Throat Disorder Spirit, etc., pearl layer powder (caution), Xiang Dan injection) and parents should also be reminded not to give children with myasthenia gravis various commercially available nutritional products claiming to contain immune enhancing effects, and also to avoid the use of medicinal immune enhancers (e.g. Thymidine, etc.).