Treatment of TB is usually accompanied by liver protection drugs to avoid liver damage. Treatment of tuberculosis requires the use of anti-tuberculosis drugs, commonly used anti-tuberculosis drugs are mainly isoniazid, rifampicin, pyrazinamide, ethambutol, which have a certain effect of liver damage. And anti-tuberculosis treatment cycle is long, long-term use of anti-tuberculosis drugs will lead to liver function damage, so in the anti-tuberculosis treatment at the same time will usually be supplemented with liver protection drugs to avoid liver damage. Liver function damage is more likely to occur in the early stage of anti-tuberculosis treatment, so regular outpatient review is needed in the early stage of treatment to monitor changes in liver function, and once liver function damage occurs, liver protective drugs should be added in a timely manner, and anti-tuberculosis drugs should be adjusted or treatment should be suspended if necessary.