Miscarriage is generally divided into two kinds of abortion and medical abortion. The bleeding will usually end within 3-7 days after abortion, and it usually lasts 7-10 days after medical abortion. If the bleeding stops and then bleeds again within the normal time frame, it is normal; if the time frame is exceeded, there may be incomplete abortion, poor uterine contraction or infection, etc. 1. Incomplete abortion: there are residues in the uterine cavity, resulting in prolonged bleeding and heavy bleeding, etc. If the residue is small, you can take some medication to promote contraction, so as to induce the residue to discharge by itself; if the residue is large or the bleeding is heavy, you need to go to the hospital in time to undergo clearance surgery to help discharge; 2. Poor contraction of the uterus: due to the patient’s failure to rest in time after abortion, overexertion or poor mental state, resulting in poor contraction of the uterus, thus triggering re-bleeding. Patients need to pay attention to rest, maintain a good mood, avoid strenuous exercise and reduce strain; 3. Infection: due to patients not paying attention to pubic hygiene after abortion or medical abortion, resulting in infection. If the pubic area appears to bleed again, anti-infection treatment is needed in time. After abortion, one must pay attention to more rest, avoid straining, eat a balanced diet, pay attention to physical hygiene and avoid sexual life. If there is more than bleeding, you should promptly go to the hospital for examination to clarify the cause and then carry out targeted treatment.