The PPD test, also known as the tuberculin test, can be used to determine whether or not a person is infected. If the test is strongly positive, anti-tuberculosis drugs should be used and treated. If the test is weakly positive or negative, there is less chance of being infected. Once tuberculosis is diagnosed, comprehensive treatment with rifampin, pyrazinamide, streptomycin and other drugs should be applied immediately so that patients can be cured of tuberculosis disease by early treatment and full treatment to avoid the emergence of drug-resistant strains of bacteria, and patients should also increase nutrition appropriately by eating chicken, milk, etc.