Patients with tuberculosis should not become pregnant because pregnancy and tuberculosis can interact with each other and cause adverse consequences. Tuberculosis is a respiratory infectious disease caused by Mycobacterium tuberculosis infection, which is a legal category B infectious disease and requires strict management. Mycobacterium tuberculosis in TB patients can be transmitted both through respiratory droplets and partly through blood, and can affect the fetus through the placenta. Most of the anti-tuberculosis drugs used by TB patients can affect the fetus and have obvious teratogenic effects, such as the commonly used drugs rifampicin, rifapentine, and propylthiouracil, which can cause teratogenicity through the placenta and even cause miscarriage. Most of the anti-tuberculosis drugs have the side effect of damaging liver and kidney function, which can also affect the liver and kidney function of the fetus. Pregnancy is extremely taxing on the body, and TB itself is a wasting disease, and pregnancy can aggravate the disease. Therefore, you should not get pregnant until you have been cured of TB.