Sexually transmitted diseases (STDs) are diseases that are transmitted through sexual intercourse and occur mainly in the genital area. The most common sexually transmitted diseases in clinical practice today are the following: i. Syphilis. Second, gonorrhea. Three, condyloma acuminatum. Four, mycoplasma, chlamydia infection. Five, genital herpes. These five diseases are now the top clinical ranking of sexually transmitted diseases in China. There are other types of sexually transmitted diseases, such as soft chancre, sexual lymphogranuloma, and inguinal granuloma, all three of which are diseases transmitted by sexual intercourse, but the incidence is not particularly high these days. There are at least 50 types of sexually transmitted diseases (STDs), which are caused by disease-causing microorganisms, published internationally.