When the cervical canal length is 1.6cm at 36 weeks’ gestation, those who are in stable condition can let nature take its course, but those who have surgical indications need to take proper rest and have a cesarean section at the right time. When the length of cervical canal is 1.6cm at 36 weeks of pregnancy, it indicates that the cervical canal is short and there is a risk of preterm labor. However, for those who are in stable general condition and have conditions for normal delivery, the development of the fetus has basically matured at this time, so there is no need for fetal preservation treatment, and they can let nature take its course. However, for those who are combined with scarred uterus, breech position and other surgical indications, activities can be appropriately reduced, appropriate prolongation of gestational weeks, and timely cesarean delivery if necessary. Cervical canal length ≥2.5cm is normal during pregnancy. Pregnant women with signs of pre-eclampsia or preterm labor can have their cervical canal length measured as prescribed by the doctor and follow the doctor’s instructions for active fertility preservation treatment. However, when the pregnancy ≥ 34 weeks, not combined with maternal and fetal comorbidities, can not be applied to contraction inhibitors, let nature take its course, and continue to closely monitor the maternal and fetal conditions. Pregnant women should pay attention to the prenatal examination during pregnancy, actively listen to the advice of professional doctors to do a good job of comprehensive care and health care, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.