Agglutination of dense spirochete particles refers to the Syphilis Spirochete Particle Agglutination Test, which, if positive, can conclude that the patient has been infected with or is being infected with the spirochete syphilis. Syphilis is a chronic systemic infection caused by the syphilis spirochete, and the syphilis spirochete particle agglutination test is a test for syphilis. If the test result is positive, it can be concluded that the patient has been infected or is being infected with the syphilis spirochete. As long as one has been infected with syphilis, antibodies to the spirochetes will be present in the body and will become positive for life. To determine if a person with syphilis is being infected with the spirochetes, a titer test is also performed in conjunction with the test. If both tests are positive, it can be determined that the patient is being infected with syphilis. If the patient has been diagnosed, he or she can be treated with medications such as benzylpenicillin, tetracycline hydrochloride, and ceftriaxone sodium as prescribed by the doctor. It is recommended that the patient should actively cooperate with the treatment and pay attention to regular review.