The common pathogens that cause STDs are viruses, bacteria, fungi, protozoa, parasites and more than 30 other species. Different pathogens can cause different kinds of STDs, the common pathogens that cause STDs are the following: 1, viruses: for example, human papilloma virus infection can lead to condyloma acuminata, human immunodeficiency virus can cause AIDS, etc.; 2, mycoplasma, chlamydia: for example, mycoplasma can cause non-gonococcal urethritis, chlamydia trachomatis can cause lymphogranuloma venereum; 3, spirochetes: for example, syphilis spirochetes can For example, the infection of Trichomonas vaginalis can cause Trichomonas vaginalis, the parasitic mite scabies can cause scabies, and the ectoparasite louse can cause pubic lice disease. Since there are many different types of STD pathogens, the symptoms and complications of STDs caused by different pathogens vary greatly. Reducing exposed sex can effectively reduce the spread of STD pathogens. In addition, most STDs have a certain incubation period and involve sexual and private topics, and often patients are unable to detect their illness, and some STDs are very difficult to cure, so controlling STD infections needs to be based on interrupting the transmission of STD pathogens.