TB skin test is also known as tuberculin test, TB skin test double circle suggests a strong positive result, this condition is usually considered the presence of Mycobacterium tuberculosis in the patient’s body, but not necessarily tuberculosis. A strong positive TB skin test with double circles means that the body is infected with Mycobacterium tuberculosis, in large numbers and with high virulence. In order to determine if the patient has TB, the patient needs to undergo a further chest CT scan and sputum examination. If there is obvious cavity shadow in the lungs and the sputum test result is positive, active tuberculosis can be diagnosed, and the patient should actively cooperate with the treatment at this time. Tuberculosis skin test double circle, if the chest CT examination result is normal and sputum test result is negative, it only indicates that the body is infected with Mycobacterium tuberculosis, it does not mean that you have tuberculosis. It can be observed for the time being. If the tuberculosis skin test is strongly positive, it is recommended to go to the hospital in time to improve the relevant examination, if diagnosed as tuberculosis should be treated in time.