Tightness and hardness of the stomach are frequent at 34 weeks of pregnancy, including both physiological and pathological factors. Physiological factors are mainly caused by physiological contractions, while pathological factors are considered to be preterm labor, which need to be dealt with accordingly after clarifying the causes. Common causes and treatment measures 1, physiological contractions: generally from 16 weeks of pregnancy, physiological contractions, the appearance of time is not regular, the degree is also sometimes strong and weak, but relatively short, the strength is also weak, with the prolongation of pregnancy, physiological contractions will become more and more obvious and frequent, so 34 weeks of pregnancy, the belly will be tight, hard, but generally not accompanied by other abnormalities, usually normal. It is usually normal, and there is no need to worry too much. In daily life, we should pay attention to avoid maintaining a position for a long time, pay attention to rest, keep a relaxed mood, relaxed body, and regular maternity checkups; 2. Premature labor: if the abdomen is tight and hard frequently at 34 weeks of pregnancy, or if it is accompanied by abdominal pain, or even vaginal bleeding and flowing water, the possibility of preterm labor should be considered. At this time, pregnant women should go to the hospital for examination in time and do further treatment according to the results of the doctor’s examination. Note: 1. Pay attention to rest during late pregnancy, do not overwork and avoid stimulation; 2. Count fetal movement at home, pay attention to any abnormalities and seek medical attention in time; 3. Have regular maternity checkups to keep track of the development of the fetus and the health of the pregnant woman.