Syphilis is transmitted through sexual contact with a patient, exposure to the patient’s blood, or when a pregnant woman becomes ill. Syphilis is a sexually transmitted disease caused by the syphilis spirochete. 1. Sexual contact with the patient: Syphilis is mainly transmitted through sexual contact, which may be caused by contact with the patient’s body fluids during sexual intercourse. 2. Contact with the patient’s blood: such as blood transfusion or irregular dental operations, intravenous injection, tattooing, earrings, etc., will be transmitted through the blood. 3. Pregnant women: Syphilis can be transmitted vertically from mother to child. If a pregnant woman is infected with syphilis, it may be transmitted through the placenta or umbilical vein, causing stillbirth, miscarriage, and fetal transmission of syphilis, etc. If there is high-risk contact with the patient, the patient should be promptly informed. If you have high-risk contacts, you need to go to the hospital in time for examination and follow the doctor’s instructions for treatment.