Whether bleeding on the 35th day of pregnancy can be preserved or not is influenced by many factors. If the diagnosis of early intrauterine pregnancy or ectopic pregnancy cannot be confirmed, it needs to be roughly judged according to the value of the current blood HCG test. If the blood HCG value doubles well and the bleeding is not very heavy, the hope of keeping the pregnancy is higher. If the current blood HCG test is not good and the bleeding is heavy, and the progesterone level is relatively low, the hope of keeping the pregnancy is not very high, and the possibility of ectopic pregnancy should be borne in mind. During the bleeding period, we need to pay more attention to rest and forbid sexual intercourse. We need to recheck the blood HCG value every other day and later combine it with the ultrasound examination to make a comprehensive analysis and make a clear diagnosis.