If syphilis is found in pregnancy, generally within the first trimester of pregnancy, a de-syphilization treatment, and then a long-acting penicillin de-syphilization treatment in the seventh month, while ensuring that the RPR and IgM tests are repeated once a month throughout the pregnancy, the child can be wanted when the test indicators are normal. After two interruptions, 94% of stage I syphilis can be successfully interrupted, and 99% of stage II syphilis can be successfully interrupted. Therefore, after regular syphilis treatment, it is possible to have a child after mother-to-child interruption.