Drug-resistant tuberculosis is not hereditary, as is common tuberculosis. Drug-resistant TB is primarily an infectious disease, so it is common to see people whose grandfather has drug-resistant TB and whose father has drug-resistant TB, but who do not have drug-resistant TB themselves. Current research has also found that the human body may have susceptibility genes, and sometimes the father and son of a patient with drug-resistant TB are found to have drug-resistant TB, but his wife does not have drug-resistant TB, so the presence of drug-resistant TB involves a human susceptibility gene, but drug-resistant TB is not hereditary. Drug-resistant tuberculosis patients living at home need to pay attention to the appropriate isolation, as follows: 1, it is recommended that patients with multidrug-resistant tuberculosis live in a separate room, and the patient’s room should be regularly ventilated, at least half an hour in the morning, afternoon and evening; 2, the patient’s sputum can not just spit, the best way to deal with it at home is to wrap it in paper and burn it. If not, spit the sputum into a sputum cup with a lid and disinfectant solution; 3. Patients are advised to eat separately, although tuberculosis is mainly transmitted through the respiratory tract, saliva and sputum may enter the meal through speech and may lead to intestinal tuberculosis when swallowed by others.