Syphilis is usually not transmitted to family members when they eat together, but it is still recommended that patients share meals for insurance purposes. Syphilis infection should be actively isolated to reduce the risk of transmission. Syphilis is usually transmitted sexually, through blood transmission and from mother to child. However, the virus can also be transmitted through saliva in the case of oral chancre, resulting in infection. Patients are advised to share meals with others, using communal spoons and chopsticks, distributing them to their own special dishes and using their own spoons and chopsticks to avoid infection on the one hand, and to quantify the diet and help clarify the amount of food eaten on the other. In addition, it is recommended to disinfect the dishes after the meal before the next use. Syphilis treatment emphasizes early diagnosis, early treatment, standardized course of treatment, adequate dosage, regular clinical and laboratory follow-up, and sexual partners should be investigated and treated together. Early syphilis can be cured clinically by thorough treatment, eliminating infectiousness. Late syphilis treatment can eliminate the inflammation in the tissue, but the damaged tissue is difficult to repair.