The feeling of abdominal drop in pregnant women at 30 weeks of pregnancy needs to be determined according to the specific symptoms to determine whether it is normal, generally because the fetus becomes larger, the abdomen becomes heavier caused by the normal physiological phenomenon, but may also be a manifestation of preterm labor, such as abdominal pain, tightness, redness and other abnormalities, you need to seek medical attention as soon as possible. 1, normal physiological phenomenon: especially in the second trimester, due to the continued development of the fetus, the body gradually increased, shaped, The woman’s abdomen will feel like it’s falling as a result of increased weight bearing. Therefore, pregnant women need to control their diet during pregnancy, eat less and more meals to prevent excess nutrition from causing abnormal weight gain of the fetus and the emergence of a huge baby, which will hinder the labor process. In addition, pregnant women need to pay attention to ensure sufficient sleep and rest time, rest can take the left side of the bed, and pay attention to avoid long-term standing, walking, reduce bending and other movements, do not overwork, strenuous activity; 2, preterm labor: if pregnant women appear abdominal falling sensation, accompanied by hard, tight, and even regular contractions, accompanied by red, broken water, etc., may be due to the fetus gradually into the pelvis, appearing Premature labor may occur because the fetus is gradually entering the pelvis. Therefore, pregnant women should pay attention to the contractions and fetal movement at all times, and go to the hospital in time to apply drugs to suppress contractions and prolong pregnancy under the guidance of the doctor, while glucocorticoids can be applied to promote fetal lung maturation, so as to prevent preterm delivery.