Drug-resistant tuberculosis is the infection of the body with tuberculosis bacilli that are resistant to tuberculosis drugs such as isoniazid, rifampicin, ethambutol, pyrazinamide, etc. There are many types of drug-resistant tuberculosis. There are many types of drug-resistant tuberculosis, as follows: 1, single drug-resistant tuberculosis: only to a tuberculosis drug resistance, such as resistance to isoniazid is called single drug-resistant, rifampicin-resistant is called rifampicin-resistant; 2, multi-drug-resistant tuberculosis: two or more tuberculosis drugs at the same time, but to exclude isoniazid and rifampicin at the same time drug-resistant, such as isoniazid and streptomycin at the same time drug-resistant called multi-drug-resistant, isoniazid and ethambutol at the same time drug-resistant called multi-drug-resistant. Ethambutol at the same time is called multidrug resistance, isoniazid, streptomycin, ethambutol, amikacin at the same time is also called multidrug resistance: 3, multidrug-resistant tuberculosis: at least one of the conditions is isoniazid and rifampicin at the same time is resistant to isoniazid, such as isoniazid, rifampicin resistance is multidrug resistance or in the isoniazid and rifampicin resistance based on a combination of ethambutol or any other kind of drug is called multidrug-resistant; 4, pan Drug-resistant tuberculosis: on the basis of resistance to isoniazid, rifampicin, i.e., on the basis of multidrug resistance, the simultaneous combination of fluoroquinolones levofloxacin, moxifloxacin and injectable amikacin, kanamycin, capreomycin, any one of the drug resistance, i.e., four kinds of drug resistance, isoniazid, rifampicin plus fluoroquinolones plus injectable drug resistance at the same time is known as pan-drug resistance. Comparatively speaking, multidrug-resistant tuberculosis and pan-drug-resistant tuberculosis belong to the national major diseases and intractable diseases, and the cure rate is 55% and 22% respectively so far, so these two kinds of drug-resistant tuberculosis bring a heavy economic and family burden for patients.