Serious infectious diseases can usually be cured, but patients with serious infections must be treated aggressively and effectively in a hospital. If patients do not have regular, reasonable and active treatment, their condition may gradually worsen and then become life-threatening. Patients with severe infections, control of infection is the most important, active control of infection conditions, should try to avoid secondary damage to the heart, lungs, kidneys and various organs, to maintain the function of various organs, while strengthening the patient’s support and nutrition in all aspects of the treatment, the recovery is very helpful. Patient body is relatively weak, especially the elderly, young children and pregnant women, infection, the degree of infection than normal adult infection may be heavier, the effect of treatment and treatment time of such patients will be longer, but also easy to aggravate the condition, life-threatening. Clinically, for patients with severe infections, a multi-pronged approach is generally adopted to treat the infection.