The bleeding time of biochemical pregnancy is the same as that of menstruation, and it will be clean in about 7 days. It is best to observe the amount of bleeding and bleeding time, if the bleeding is too large or bleeding time is long, may be intrauterine residue, may also be caused by gynecological infections, it is best to go to the hospital in time for ultrasound examination, gynecological examination is needed, according to the specific circumstances of reasonable treatment. If there is a residue in the uterus can be scraping, under the guidance of the doctor to take motherwort, to promote the discharge of blood, if there is a gynecological infection, it is best to take metronidazole, amoxicillin under the guidance of the doctor to promote the recovery of the condition. Bleeding time is too long easy to aggravate gynecological infection, must pay attention to hygiene, can not premature coitus, cause biochemical pregnancy may be the uterus is not well developed, may be the development of fertilized egg is not well developed, again pregnant need to go to the hospital to do a comprehensive physical examination, reasonable regulation.