70-year-old men with syphilis, and the general population treatment program is the same, should be based on the clinical stage of syphilis treatment, mainly through the injection of long-acting penicillin treatment. 1. Early latent syphilis: for early latent syphilis or stage I and II syphilis, benzylpenicillin can be injected intramuscularly, or oral tetracycline hydrochloride, doxycycline and other drugs. 2. Late syphilis: it can be treated by intramuscular injection of benzylpenicillin, procaine penicillin G and other drugs. 3. Recurrent syphilis: recurrent syphilis can be injected bilaterally with benzylpenicillin, if the patient is allergic to penicillin, doxycycline can be used instead. 4. Cardiovascular syphilis: cardiovascular syphilis requires the use of penicillin in small doses, if necessary, with the use of prednisone. 5. Neurosyphilis: patients with neurosyphilis need to be injected with benzylpenicillin, ceftriaxone and other drugs for treatment. It is recommended that elderly patients with syphilis consult a doctor in a timely manner, strictly comply with the doctor’s instructions to use medication, not self-medication.