After a miscarriage, the nightmare is dark red and the amount is relatively small, much less than the amount of menstruation. It usually lasts for less than a week and is normal. However, if the amount of malaria is more than the amount of menstruation and bright red in color, it is possible that the miscarriage is not completely clean. In this case, it is recommended to go to the hospital for further examination so that the appropriate clinical treatment can be given. If the bloody malodorous fluid is more than one week old, it is important to exclude the possibility of infection. If there is also clinical pain in the lower abdomen and a foul odor in the discharge, the possibility of infection is very high. In this case, it is recommended to go to the hospital in time for the corresponding examination and to give anti-inflammatory treatment in time, so that the inflammation can be absorbed as soon as possible.