If abdominal cramps occur during pregnancy, they are mostly considered to be caused by calcium deficiency, because the demand for calcium ions increases during pregnancy, and the fetus needs to take in sufficient calcium ions in the womb, so it often leads to a decrease in the mother’s calcium, and in this case, calcium should be actively supplemented. Low calcium can cause increased neuromuscular excitability, often causing muscle twitching, which can be manifested as generalized muscle twitching, so take more calcium carbonate granules, usually eat more high-calcium foods, such as bone broth, shrimp, soybeans, and also supplement active vitamin D3, calcium supplementation during pregnancy is particularly important, otherwise it is easy to cause fetal calcium deficiency.