Tuberculosis skin test is also known as tuberculin test, referred to as PPD test, if the double circle is usually considered to be a strong positive skin test, it is recommended to consult the infectious disease hospital in a timely manner, you can improve other related auxiliary examinations and chest imaging data to make a comprehensive judgment. If the patient’s chest imaging data do not show obvious lesions, and the routine blood test is normal, and the sputum test is not positive for tuberculosis, it is usually considered that the symptoms are relatively mild, and it can be observed for the time being. If the patient has obvious tuberculosis foci on chest imaging and the sputum test is positive for tuberculosis, it is considered to be active tuberculosis and requires isolation and early standardized anti-tuberculosis treatment.