There are many causes of uterine cramps, and the following points need to be noted: First, cervical canal stenosis, which may lead to uterine cramps. Because of frequent stenosis problems, it can lead to spasmodic contractions from poor menstrual blood discharge, and also produce irritating pain. Second, it may be caused by congenital dysplasia of the uterus. When the uterine muscles and fibers are out of proportion, it may lead to poor contraction and local hypoxia or local ischemia, causing uterine cramps. When the position of the uterus changes, it will lead to poor flow of menstrual blood, which will cause spasmodic contraction after stimulating the uterus, resulting in uterine cramps. When you have uterine cramps, it is advisable to go to the hospital for examination in time to avoid the situation becoming more serious.