There is fluid beside the gestational sac but no bleeding, in which fluid beside the gestational sac refers to bleeding under the chorionic villus. If the bleeding only accumulates locally and does not flow out to cause hemorrhage, it suggests that there is a possibility of preterm miscarriage. At this time, you need to take bed rest, oral fertility preservation drugs and pay attention to diet, to carry out fertility preservation treatment. Common causes: 1, autoimmune factors and coagulation abnormalities: fetal sacs bedded into the endometrium, if and when the mother immune rejection reaction, may cause local bleeding, causing fluid accumulation; 2, endometrial local dysplasia: if the endometrium has damage or inflammation, in the process of the pregnant egg bedding process and the subsequent development of the fetal sacs, it may cause blood vessel rupture and bleeding; 3, infections: if there is a vaginitis, vaginal flora imbalance, etc., the incidence of subchorionic hematoma will increase; 4, abnormal embryonic development: often caused by chromosomal abnormalities in the embryo. Response: 1, bed rest: avoid walking and strenuous activities, prohibit sexual intercourse; 2, pay attention to diet: pregnant women should eat a light diet rich in high-quality protein, high vitamins, easy to digest, nutrient-rich, avoiding the intake of spicy and stimulating and cold food; 3, oral preservation of the fetus: you can be guided by a doctor to take progesterone, dydrogesterone tablets and other progestational hormone drugs, to inhibit contractions, and preservation of the fetus treatment. In addition, we should also be alert to the phenomenon of embryonic abortion, pay attention to the observation of clinical symptoms, regular recheck blood HCG values and ultrasound, to monitor the development of the gestational sac.