The tightness and hardness of the stomach in early pregnancy may be a physiological contraction phenomenon if it occurs briefly. If it occurs frequently, lasts for a long time, and the symptoms do not ease after rest, it may be caused by pre-eclampsia miscarriage, intestinal dysfunction, etc., and requires immediate medical treatment. 1. physiological contractions: excessive activity of pregnant women, bad emotional stimulation, etc., may cause physiological contractions and tight and hard abdomen, so pay attention to rest and observe more, which can generally improve in a short time. 2. pre-eclampsia miscarriage. If, after rest, the tight and hard belly of pregnant women not only does not ease, but also has the tendency to intensify, and is accompanied by abdominal pain and vaginal bleeding, they should immediately go to the hospital to check ultrasound, blood HCG and progesterone value to check the embryonic development and see if the miscarriage is caused by low HCG and progesterone value. If you are diagnosed with pre-eclampsia miscarriage, you should be hospitalized for fetal preservation treatment and follow the doctor’s instructions to take oral fetal preservation medicine or fetal preservation injection for fetal preservation treatment, while paying attention to bed rest and strengthening nutrition; 3. Intestinal dysfunction: Pregnant women’s poor diet or cold causes intestinal dysfunction, resulting in intestinal flatulence, which can cause tightness and hardness of the stomach, which can be relieved by proper warmth and massage of the abdomen after the gas is expelled. Pregnant women should pay attention to their body condition during pregnancy, and when tight and hard tummy occurs, they should take more rest, and if the symptoms do not ease within a short period of time, they should seek medical attention to clarify the cause and treat the cause.