Anti-infective drugs are classified as antibacterial, antiviral, antifungal, antituberculosis and antiparasitic drugs. 1, anti-bacterial drugs: anti-bacterial drugs are mainly used to treat infections caused by bacteria, anti-bacterial drugs are also divided into a variety of β-lactams, aminoglycosides, macrolides, tetracyclines, cephalosporins, quinolones, as anti-bacterial drugs are prone to adverse reactions, pay attention to the skin test when using to avoid serious 2, antiviral drugs: antiviral drugs mainly through the impact of viral replication, so as to achieve the purpose of inhibiting the proliferation of viruses, commonly used drugs are amantadine, ribavirin, more ciclovir, vaxilovir, acyclovir, interferon, zidovudine, etc., because each drug precautions are different, when using should pay attention to consult a physician; 3, antifungal drugs: antifungal drugs are also divided into the treatment of superficial parts The drugs commonly used in the treatment of superficial parts are clotrimazole, miconazole, ketoconazole, terbinafine, etc. For deep fungal infections, flucytosine, mycobacterium, itraconazole and other drugs can be used, and attention should be paid to avoid drug resistance; 4, anti-tuberculosis drugs: Although Mycobacterium tuberculosis also belongs to bacteria, but due to the special structure, strong virulence, the general antibiotics can not Therefore, it is necessary to apply targeted anti-tuberculosis drugs for the treatment of tuberculosis caused by Mycobacterium tuberculosis, such as isoniazid, rifampin, pyrazinamide, sodium p-aminosalicylate, etc. Due to the large side effects, the use of medical advice should be followed, and the time of use and dosage should be strictly controlled; 5, anti-parasitic drugs: anti-parasitic drugs are divided into anti-protozoal drugs and anti-helminthic drugs, which should be used to clarify the infected The use of anti-parasitic drugs is divided into anti-protozoal and anti-helminthic drugs. In the use of anti-infective drug treatment, should be used in accordance with medical advice, do not take it privately to avoid adverse reactions due to intolerance to drugs.