As the saying goes, the body disease can be treated, but the heart disease is difficult to cure. Many patients who have had high-risk behaviors, even if they are not infected, leave behind various psychological burdens. Many of these people are particularly fearful of the idea of whether there are various viruses in the environment that cause STDs, and now about this knowledge, a brief introduction to you. The main STDs in our country are as follows: 1, gonorrhea: is a bacterial infection caused by Neisseria gonorrhoeae, humans are its only natural host, this bacteria is relatively delicate, suitable for growth in a humid, 35-36 degrees Celsius, containing a small amount of carbon dioxide environment. If it is in completely dry conditions, it can die in 1-2 hours, survive for 13 hours at 39°C, 15 minutes at 42°C, 5 minutes at 50°C, and die immediately at 100°C. If it is in wet towels, it can survive 10-24 hours, so the chances of infection are high when it touches the patient’s intimate clothing and used towels. The other is that all kinds of disinfectants can kill gonococcus. 2, syphilis: the pathogen that causes syphilis is the syphilis spirochete, it is not easy to survive outside the body, like boiling, soap and water and general disinfectants (alcohol) are easy to kill the syphilis spirochete, and it is not easy to survive in a dry environment, in 41-42 degrees Celsius 1-2 hours can die, but in low temperature (-78 degrees Celsius) can be saved for several years. Therefore, in general, there is little possibility of syphilis infection through object contact, and there is no problem with disinfecting and cleaning clothing that comes in contact with the carrier’s secretions (in large quantities). 3, genital herpes: is due to the herpes simplex virus (HSV) infection caused by people is the only natural host of HSV, HSV is more sensitive to heat and dry, in a hot and humid environment at 50 ℃ or 90 ℃ dry environment can be inactivated in 30 minutes, to ultraviolet light, X-ray irradiation is more sensitive to formaldehyde, exterminator iodine more sensitive. 4, condyloma acuminata: is caused by human papillomavirus (HPV) infection, HPV virus can tolerate drying, can be long-term preservation, especially in the human body this warm and humid conditions are most likely to survive reproduction. 5, non-gonococcal urethritis: Chlamydia is sensitive to heat, its infectiousness at 60 ℃, 10 minutes completely lost, at 37 ℃, 48 hours significantly decreased, easy for chemical reagents inactivation: ether, formalin. 6, AIDS: The virus survives longer in a humid environment at room temperature, about 2 weeks, while blood with low HIV content loses its vitality when it dries naturally for 2 hours. HIV is sensitive to heat, boiling can inactivate it quickly, and general disinfectants will also inactivate it. And HIV can only survive in blood and body fluids to obtain cells, not in air, water or food. The saliva and tears of HIV-infected people can contain the virus, but the HIV load is very low and there are no exact reports of infection in this area. I hope that more people will understand the knowledge and be able to protect themselves by being more clean, and also be able to understand STDs correctly and stay away from them so that they can really enjoy their lives.