The most common STDs in men include condyloma acuminatum, gonorrhea, nongonococcal urethritis, syphilis, genital herpes, and genital chlamydia. Most of these occur because of a history of unclean sex. 1. Typical manifestations of syphilis usually show a chancre as well as swollen lymph nodes in the abdomen. After about two weeks, the chancre subsides and a syphilitic rash may appear on some men. 2. Warts are caused by human papillomavirus infection, mainly manifested in the glans coronal groove or even on the foreskin cauliflower-shaped superfluous organisms, superfluous organisms will gradually increase in size, there is a certain infectious, generally no self-conscious symptoms. 3. Genital herpes is caused by HSV-2 virus infection, recurrence rate is relatively high, mainly manifested in the vulva appear aggregated small blisters. 4. Gonorrhea is mainly caused by gonococcal infection, there will be frequent urination, urinary urgency, urinary pain performance, there will be discharge from the urethral orifice, different periods of gonorrhea, the secretion performance is also different. 5. non-gonococcal urethritis, is caused by mycoplasma, chlamydia infection, men can be manifested as some thin transparent or yellowish secretion, accompanied by a slight urinary discomfort, but not to the extent of pain. It is recommended to develop positive lifestyle habits, eliminate unclean sex, and if you have any of the above discomfort, it is recommended to seek medical treatment as soon as possible.