A second recurrence of TB means that the previous treatment was incomplete, irregular or infected with drug-resistant TB bacteria. A second relapse of TB means that the previous treatment was incomplete and failed to eradicate the TB bacteria. It may be related to irregular treatment, such as insufficient course of treatment, irregular medication, or in a small number of infected people, infection with drug-resistant bacilli. In this case, you should go to the hospital, improve the examination to clarify the current lung lesions, and improve the TB drug sensitivity test. After obtaining the TB drug sensitivity test, the treatment program should be adjusted according to the TB drug sensitivity test in time, and sensitive anti-tuberculosis drugs should be used. After restarting the anti-tuberculosis treatment, the whole course, regularity and combination of medication should be ensured, and the medication should not be stopped or changed without authorization. During the period of taking the medication, one should go to a specialist for regular check-ups and adjust the treatment plan according to the test results.