Taking tuberculosis drugs with an AST of 700 U/L may require temporary suspension of the drug and liver-protecting treatment. After liver function is restored, other anti-tuberculosis drugs can be replaced to continue anti-tuberculosis treatment, and attention should be paid to whether liver function, kidney function, optic nerve and vestibular function are impaired during the use of other drugs. If there is a mild increase in aminotransferase, not more than 120U/L, you can continue to take anti-tuberculosis drugs and add liver-protecting drugs to treat the disease; however, if the aminotransferase rises to 700U/L, you may need to stop the anti-tuberculosis drugs and take liver-protecting treatment, which can be carried out with the use of polyenophosphatidylcholine, reduced glutathione, liver-protecting tablets and other medicines to protect the liver. After the aminotransferase returns to normal value, anti-tuberculosis treatment can be continued. Drugs that may damage liver function, such as isoniazid, rifampicin, pyrazinamide, etc., should be avoided, and drugs such as ethambutol, streptomycin, cycloserine, etc., can be used for treatment, and during the period of treatment, a person should monitor whether the liver and kidney functions are normal, and whether the optic nerve and vestibular functions are normal. If 700 U/L of glutamic acid aminotransferase occurs after taking anti-tuberculosis drugs, please consult a doctor in time and ask the doctor to dispose of it. Drugs need to be used under the guidance of a specialized physician, and should not be used at random.