PCP-type pneumonia can be cured, and patients need bed rest and oxygen, improvement of the functional state of ventilation, and attention to water-electrolyte balance. If patients have progressive respiratory distress, they can be treated with ventilator-assisted breathing, and patients with severe hypoxia should be treated under ICU monitoring. The survival rate of patients with HIV combined with PCP pneumonia can be increased to 40% with mechanical ventilation-assisted respiratory therapy, and appropriate treatment should be given for infections caused by other pathogens. The common drugs used are sulfamethoxazole, sulfamethoxazole or etanercept, aminophenazone and TMP (methomyl), and caspofungin. Glucocorticosteroids as adjunctive therapy can maximize the efficiency of antibiotics, and the hormones should be given 15-30 minutes before sulfamethoxazole and compound sulfamethoxazole are taken.