Separation of the rectus abdominis muscle is usually considered normal within two fingers. Due to factors such as uterine distension or obesity, the rectus abdominis muscle is separated from the white line of the abdomen during pregnancy or after childbirth. Generally, as long as the rectus abdominis muscle is separated within two fingers, it is considered normal. If the rectus abdominis muscle is separated by more than two fingers, it is an abnormal rectus abdominis muscle separation, which can cause abdominal wall hernia and even lead to pelvic organ prolapse in women. If rectus abdominis muscle separation occurs during pregnancy or after childbirth, it is recommended to go to a regular hospital as soon as possible for consultation and examination to clarify the extent of rectus abdominis muscle separation, and to take medical treatment measures if necessary. In case of mild rectus abdominis separation, after the birth of the fetus, rehabilitation exercises, such as abdominal muscle exercises and pelvic floor muscle exercises, can be carried out under the guidance of professional doctors, and can gradually recover.