Occasional hardening of the belly in the seventh month of pregnancy is a pseudo contraction that does not require special treatment. In the middle and late stages of pregnancy, the fetus grows rapidly and causes the uterus to be sensitive, so when it is slightly stimulated or the fetus moves more, the symptoms of hardening of the belly will appear. Most of them are more frequent at night, but not particularly frequent during the daytime. If the fetus is suffering from intrauterine hypoxia, which causes contractions and hardening of the stomach, it may lead to preterm labor; you should use fetal preservation drugs to inhibit smooth muscle spasm of the uterus, which can relieve frequent fetal movement or contractions in the abdomen. The contraction of the uterus can be inhibited to avoid preterm labor.