Positive syphilis is not necessarily a syphilis infected person, the diagnosis of syphilis requires a combination of epidemiologic history, clinical manifestations, and laboratory test results to make a comprehensive judgment. The specific analysis is as follows: 1. Epidemiological history: syphilis is a sexually transmitted disease, and most of the infections occur in multiple partners, unsafe sex or sexual partners with a history of syphilis infection. 2. Clinical manifestations: syphilis is divided into three phases; first-phase syphilis is characterized by a hard chancre and enlarged inguinal lymph nodes or proximal lymph nodes in the affected area; second-phase syphilis is characterized by a syphilitic rash, flat warts and damage to multiple organs; and third-phase syphilis is characterized by a trephine swelling, a nodular syphilitic rash and damage to multiple organ systems. 3. Laboratory tests: including non-syphilis spirochete antigen test and syphilis spirochete antigen test. The former is mainly to evaluate syphilis to assess the effect of treatment, determine the recurrence or re-infection, etc., but for some diseases: such as rubella, measles, autoimmune diseases, etc. can also be positive, i.e., false-positive, but the titer is relatively low. A positive test for the latter makes the diagnosis clear, but does not clarify whether the infection is past or recent. Generally, diagnosis requires both to be positive and multiple tests. The above diagnosis of syphilis needs to be considered comprehensively in order to make a judgment. If you are infected with syphilis, it is recommended that you seek medical attention and standardized treatment in order to avoid delays.