1, syphilis: 2-3 weeks; 2, gonorrhea: 2-10 days; 3, non-gonorrheal urethritis: 1-3 weeks; 4, condyloma acuminata: 3 weeks to 8 months, average 3 months; 5, genital herpes: 2-20 days, average 6 days; 6, venereal lymphogranuloma: 6 to 21 days, average 7-10 days. Typical symptoms: After this incubation period, if there are some uncomfortable symptoms, such as: 1, genital ulcers is a typical appearance of stage I syphilis. Ulcers are generally about one centimeter in diameter and occur more often in the coronal area of the penis in men and in the labia majora, labia minora or cervix in women. As there is no obvious pus on the surface of the ulcer and the patient himself does not feel pain, it is often overlooked until the appearance of the rash of second-stage syphilis when the hospital is visited. 2, the vulva of the appearance of warts may be infected with condyloma acuminata. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. It happens quietly and gradually grows in size until one day the patient notices, either intentionally or unintentionally, the appearance of small warts on the vulva. 3, small blisters on the vulva may be infected with genital herpes. It is characterized by the appearance of a small pile of about 4 to 5 small blisters on the vulva with a burning or stinging sensation locally. These small blisters quickly break down into small vesicles. The general symptoms of genital herpes are very mild, even if not treated after about 7 to 10 days the vesicular surface can grow on, but it is very easy to recur, bringing great psychological pressure to the patient. 4, the urethral opening appears purulent discharge to suspect that may be infected with gonorrhea.