Pregnant women should be cautious about eating capers for the following reasons: 1. capers contain substances that stimulate the uterus and cause uterine contractions, which can easily cause lower abdominal pain, abnormal vaginal bleeding and other conditions, and may lead to the cessation of embryonic development, which can cause miscarriage in severe cases; 2. the possibility of calcium deficiency during pregnancy is greater because pregnant women not only have to supply the calcium needed for fetal development, but also to meet their own metabolic needs The calcium needed for her own metabolism. If the fetus absorbs a large amount of calcium, but the pregnant woman herself does not take calcium in time, it will cause more serious calcium deficiency symptoms in pregnant women. Therefore, pregnant women usually start to take calcium supplements from the middle of pregnancy. The capers contain oxalic acid, oxalic acid and calcium absorption in food can generate calcium oxalate, which is not conducive to the absorption of calcium in pregnant women; 3, capers have the effect of water, which may increase the amount of urine, aggravating the constipation of pregnant women; 4, late pregnancy compared to early pregnancy, the fetal resistance to the outside world increased, so a small amount of consumption of capers will not have too much effect. But a lot of consumption of capers, due to frequent fetal movement, can affect the growth and development of the fetus, serious cases will appear premature birth. In addition, if the fetal heart is unstable in the middle and late pregnancy, do not eat capers to avoid inducing miscarriage.