Whether patients with tuberculosis need to eat separately needs to be clarified according to the actual situation. If no Mycobacterium tuberculosis can be found by examining the sputum of a patient with pulmonary tuberculosis, or even if the culture of Mycobacterium tuberculosis in the sputum is negative, then it is possible to eat together. This is because Mycobacterium tuberculosis is not present in the patient’s saliva and sputum and is not infectious. If Mycobacterium tuberculosis is found and the culture of Mycobacterium tuberculosis is positive, there will be a large number of Mycobacterium tuberculosis in the sputum in high concentration, which is contagious, so it is not possible to eat together at this time, and should be separated and eat separately.