The brown discharge on the 20th day of transplantation is considered to be a precursor to miscarriage and may also be due to embryonic arrest. If there are gynecological infections such as vaginitis and cervicitis, the brown discharge may also be caused, and it is necessary to go to the hospital for examination to determine the specific cause, and after identifying the cause, use reasonable medication under the guidance of the doctor. The phenomenon of miscarriage will appear abdominal pain, increased bleeding and other phenomena, you can draw blood to check HCG and progesterone, if embryonic abortion needs to be determined through ultrasound examination, some people do not have discomfort after embryonic abortion, some will appear brown discharge, gynecological inflammation appears discharge accompanied by vulvar itching, pain and other phenomena. If there is an aura of miscarriage, you need to use progesterone to preserve the fetus, rest in bed, eat more food containing vitamin E. If you have gynecological inflammation, you can use anti-inflammatory drugs, anti-inflammatory drugs such as cephalosporin, amoxicillin, etc. After embryonic abortion, you need to abort the fetus in time to avoid intrauterine infection.