A short cervical canal usually requires 3-7 days of hospitalization for birth control, and the exact time varies from person to person. The normal length of the cervical canal is 2.5 -3.0cm. If it is shorter than 2.5cm, miscarriage or preterm labor is likely to occur, and it is necessary to go to the hospital for cervical cerclage treatment, along with birth control drugs, such as progesterone. Cervical cerclage threads sutures into and out of the vaginal cervical wall to narrow the cervical introitus, which can stop the cervical canal from dilating as the months of pregnancy increase and reduce late miscarriage and preterm labor. It can also reduce partial placenta previa bleeding. Some women are at risk of poor ringing and failure of birth control, which requires prolonged hospitalization. Therefore, for women with short cervical canal, it is necessary to pay attention to the prevention of miscarriage, preterm labor, early ring ligation to correct the short cervix, and consult a professional doctor for treatment of any discomfort.