A body temperature of 36.9 after cure of tuberculosis is normal, and the absence of fever indicates that the anti-tuberculosis treatment is effective. Tuberculosis is a chronic infectious disease of the lungs caused by Mycobacterium tuberculosis, and common clinical symptoms include cough, hemoptysis, emaciation, and fever. Among them, fever is usually low, i.e., 37.4-38℃. The body temperature usually returns to normal after anti-tuberculosis treatment. If TB is detected, it is important to standardize the treatment and take oral anti-tuberculosis drugs (e.g. isoniazid, rifampicin, pyrazinamide, ethambutol, etc.) under the guidance of a doctor. For patients who are not well treated with medication, surgical treatment may also be an option under a doctor’s evaluation. Lastly, it is important to remember that TB may recur even after it is cured, so it is important to follow your doctor’s instructions, never stop taking your medication, and make it a habit to have regular checkups.