Pre-tuberculosis is not contagious, but symptoms such as low fever, general weakness, loss of appetite and even dry cough and coughing up blood are the main manifestations of pre-tuberculosis. After all, tuberculosis is a chronic disease and failure to treat it in a timely manner can lead to deterioration or even aggravation of the disease by drug resistance. In addition to keeping a certain distance from tuberculosis patients, it is also necessary to develop the habit of not spitting, and to disinfect and sterilize the clothes or drugs used by tuberculosis patients on a regular basis. Patients with tuberculosis must pay attention to strengthening exercise, enhancing their immunity, and increasing nutrition can effectively help the recovery of the disease.