The ppd is a tuberculin test, and two plus signs on the tuberculin test (ppd) indicate a possible tuberculosis infection. Two plus signs on the tuberculin test (ppd) require medication if further tests confirm the diagnosis of active tuberculosis. Prophylactic medication is recommended if TB is a latent infection and there are high risk factors for TB. Tuberculin test, which cannot confirm the diagnosis of active tuberculosis, is only an auxiliary test for diagnosing tuberculosis. The diagnosis of TB requires comprehensive judgment by a medical professional, such as epidemiologic history, clinical symptoms, pathogen testing, and chest imaging. If there are no TB-related risk factors, you can go to the hospital for regular follow-up. If there is any abnormality, go to the hospital in time for examination and treatment under the guidance of the doctor.