There are many types of rashes in AIDS patients, which can be classified as infectious skin diseases, non-infectious skin diseases, and skin tumors. AIDS is a systemic disease caused by the infection of the organism with human immunodeficiency virus (HIV), which causes various infections and tumors. 1. Infectious skin diseases: (1) Viral infections: herpes zoster, herpes simplex, common warts, flat warts, condyloma acuminatum and so on that may be caused. (2) Bacterial infections: can cause skin folliculitis, skin boils, or multiple skin abscesses. (3) Fungal infections: may cause ringworm, tinea cruris, tinea pedis, tinea cruris, tinea capitis and other fungal infectious diseases. 2. Non-infectious skin diseases: such as seborrheic dermatitis, pityriasis rosea, acne, atopic dermatitis, ichthyosis, psoriasis, etc. 3. Skin tumors: common ones are Kaposi’s sarcoma, lymphoma, squamous cell carcinoma, malignant melanoma and so on. AIDS patients have poor resistance, the use of drugs need to be cautious, suffering from skin diseases recommended timely medical treatment, not to hide the medical history, so as not to affect the doctor’s judgment.