Whether mild tuberculosis can recover spontaneously in 3 months depends on the patient’s own immunity and resistance. Mild lesions and patients with strong immunity and resistance may recover in 3 months, while those with poor immunity and resistance generally do not recover. Tuberculosis is caused by Mycobacterium tuberculosis infection in the lungs. Mild lesions, coupled with a high level of immunity and resistance in some patients, may be cured without treatment. However, due to individual differences, some people can recover from the disease within 3 months, while others need a longer period of time to recover from the disease. For people with poor immunity and mild TB, if they cannot be cured, they need to go to the hospital and receive anti-tuberculosis drugs. Drugs such as isoniazid, rifampicin, ethambutol, pyrazinamide and streptomycin are commonly used in the clinic, and care needs to be taken to ensure that the patient does not develop resistance to these drugs. Even if the diagnosis of mild tuberculosis is confirmed, the patient should go to the hospital in a timely manner to determine the diagnosis and treatment plan under the guidance of professional doctors.