If in early pregnancy, middle pregnancy, pregnant women with a hard little tummy is considered false contractions; if it is late pregnancy, it is considered physiological contractions. 1. If in early pregnancy, middle pregnancy: pregnant women to maintain a position for a longer period of time, the abdomen may appear a burst of contractions, hard feeling; characterized by contraction frequency is inconsistent, short duration, long intervals and irregular, but not accompanied by shortening of the cervical canal, the mouth of the uterus dilated cervical morphology changes. 2. Pregnant women in late pregnancy: after about 32 weeks, physiological contractions may occur, thus preparing for regular contractions during labor; pregnant women may feel that their stomachs have become hardened, with irregular slight falling, pain, etc., but they are not frequent, and they are not accompanied by a shortening of the cervical canal or dilatation of the mouth of the uterus. In addition, regular contractions during the expected period of labor are a sign of entering the labor process, most of them are accompanied by low back pain or abdominal pain, abdominal tension, a hard feeling when touching the abdomen, accompanied by contractions of the uterine mouth gradually open, the fetal head descends. Pregnant women are advised to relax and follow the doctor’s instructions for regular checkups; if persistent abdominal pain or vaginal bleeding occurs, it is necessary to consult a doctor in time to clarify the cause and have the doctor take appropriate measures.