For women who are 24 weeks pregnant, the cervical canal usually does not continue to get longer. The length of the cervical canal is related to the pregnant woman herself, not to the different periods of pregnancy, so the cervical canal will not get longer with the increase of pregnancy time. For women with short cervical canal, it may increase the occurrence of miscarriage, premature rupture of membranes, preterm labor, etc. during pregnancy, so pregnant women should have a good prenatal checkup and should dynamically monitor the length of the cervical canal, which can be treated by cervical cerclage if necessary. At the same time, it is also necessary to pay attention to more rest, do not do strenuous exercise. For women who are found to have a short cervical canal, it is recommended that they go to a regular hospital in time to improve the relevant examinations and actively treat under the guidance of the doctor to minimize the occurrence of miscarriage and preterm delivery. The specific situation is recommended to consult a professional doctor.