Sexually transmitted diseases (STDs) are a group of diseases that can be transmitted through various sexual contacts and sexual behaviors, and are the most common group of infectious diseases in humans today, including syphilis, gonorrhea, non-gonococcal urethritis, condyloma acuminata, genital herpes, soft chancre, and lymphogranuloma venereum. Although the main route of transmission of STDs is through sexual contact, a small number of cases are also contracted through indirect contact with contaminated clothing or utensils of patients with STDs. Bath tubs and towels used by STD patients, especially underwear, can be contaminated with STD pathogens. For example, the pus of a gonorrhea patient may flow from the urethra or vagina in large quantities; the hands of the patient often carry a large amount of pathogens, which may also contaminate clothes, toilets and other supplies. Therefore, if a family member has an STD, in order to prevent cross-infection, especially for the STD patient’s intimate supplies should first be strictly separated from healthy people with storage, separate washing, special tools for special use; patients can be eliminated by repeated use of underwear; patient’s clothing should be disinfected first, after washing. Common disinfection methods are as follows: 1, exposure to the sun: STD pathogens, such as syphilis spirochetes, gonococci, etc., both afraid of heat, but also afraid of cold, such as gonococci at 45 ℃ can only survive for 15 minutes, in the sun’s ultraviolet radiation at room temperature can survive for 90 minutes. Therefore, the underwear and towels used by STD patients can be exposed to the sun for 2-3 hours to achieve a better disinfection effect. The longer the exposure time, the better the disinfection effect. 2, disinfectant soaking: all items that can be soaked can be disinfected with chlorine-containing disinfectant such as 84 disinfectant for 30 minutes; other disinfectants can also be used for soaking. Specific methods of use, configuration ratios, safety matters, etc., will be indicated on the disinfectant bottle, and must be operated safely in accordance with the instructions for use in the process. 3. Boiling: Patients’ worn underwear and underpants, used towels and bath towels can be disinfected by boiling, and the clothes should all be immersed in hot water. General STD pathogens can be killed by boiling for a few minutes (e.g. 2-5 minutes). Items contaminated by AIDS need to be boiled for 20 minutes to achieve disinfection. 4.Wipe with disinfectant solution: For items such as toilets and chairs that are in contact with patients, wipe with disinfectant solution to disinfect them. Commonly used disinfectant solutions include effective chlorine bleach, Lysol solution, etc. Finally, it should be noted that this article is mainly for families with STD patients, their family members of daily disinfection precautions, we in general contact with an STD patient in daily life, such as shaking hands, common meals, etc. is not infected with STDs. The reason is that most STD pathogens die quickly when they leave the warm and moist environment of the urogenital tract. Especially on the surface of dry objects, STD pathogens cannot survive. Therefore, daily contact with STD patients, including AIDS patients, will not cause infection.