A positive Mycobacterium tuberculosis is clinically significant in two ways: a positive sputum stain for acid-fast bacilli and a positive sputum culture for Mycobacterium tuberculosis. Both are clinically diagnosed as tuberculosis once positive changes are found several times. The treatment is as follows: 1. Go to a professional tuberculosis control institution or a professional tuberculosis hospital to give anti-tuberculosis treatment, and pay attention to reasonable nutrition, proper exercise, physical fitness, and regular review; 2. Because positive Mycobacterium tuberculosis is highly contagious, it is easy to spread to others through the respiratory tract, so pay attention to isolation at this time. Spit up the sputum wrapped in paper and put it in a porcelain cup to burn it, or soak it in 84 disinfectant for 24 hours before giving it to discharge, so as not to cause harm to other people.