After a man is infected with syphilis, symptoms may usually appear in 2 to 4 weeks. Syphilis is a sexually transmitted disease (STD) caused by infection with the syphilis spirochete, which is transmitted by blood, mother-to-child, and sexually. After infection, most people may have localized painless ulcers and other symptoms at 2 to 4 weeks, and later at about 3 months, which may be combined with localized lymph node enlargement. However, some people basically have no abnormal symptoms, only the examination can be found to have syphilis serology positive. It is recommended that patients with high-risk behaviors who are worried about syphilis infection should seek timely diagnosis so as to avoid delaying their condition. If the diagnosis of syphilis, should do a good job of personal hygiene habits, personal belongings are not used with others. The daily attention to personal rest, regular routine habits, the treatment period should be prohibited sexual intercourse, so as not to cause the virus infection again.