Brown discharge on the second day of frozen embryo transfer is generally considered to be a normal phenomenon, which is related to the damage to the cervix and endometrium caused by the surgery. When a woman undergoes in vitro fertilization transplantation and has brown discharge on the second day of treatment, it is generally considered to be a normal phenomenon induced by damage to the cervix and the endometrium during the surgery, and it can be recovered automatically in 2-3 days. At the same time, women need to observe their own body changes, as long as it does not cause abdominal pain and heavy vaginal bleeding, generally do not need to worry. Women need to keep the vulva clean and hygienic to avoid bacterial infection caused by poor hygiene, which will affect the development of fetal implantation. In addition, after IVF transplantation, there are a lot of things that need to be paid attention to, and it is recommended to strictly follow the doctor’s instructions to do a good job of care. If there are any uncomfortable symptoms, it is necessary to consult the doctor in time.