Women who are prone to constipation during pregnancy can use Keflex appropriately, but they should not be dependent on Keflex. Pregnant women have higher levels of progesterone during pregnancy, which prevents uterine contractions from affecting the fetus, and in the process progesterone also slows down intestinal peristalsis, leading to constipation. If constipation is more serious, it is possible to use Kefir to promote defecation, but it should be used in moderation and not applied all the time to prevent dependence on Kefir. The adverse effects and contraindications of this drug are not clear, and when using it, attention should be paid to the opening of the injection catheter should be smooth, so as not to bruise the anus. Clinical when pregnant women appear more serious constipation, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to use drugs such as Keseru, avoid unauthorized use of drugs to prevent the adverse consequences.