The examinee lies flat, the upper body is raised 30 degrees, the examiner’s fingertips are placed together in the median line, and the fingers feel the space of the concave gap that is the rectus abdominis muscle separation a few fingers. The degree of separation of the rectus abdominis muscle is detected clinically through the rectus abdominis muscle separation test. The patient lies flat on the examination bed, flexes the legs to relax the abdomen, and raises the upper body about 30 degrees. The examiner’s fingertips are placed together in the midline of the abdomen above the umbilicus, and the edge of the muscle can be felt on the left and right sides of the fingers; the number of fingers that can be placed in this defective depression is the number of fingers that the rectus abdominis muscle is separated. Under normal circumstances, the separation of rectus abdominis muscle is not more than two fingers, more than two fingers can be treated conservatively through exercise rehabilitation, more than three fingers may be considered to be the hernia and other effects caused by the consideration of surgical treatment if necessary. If the rectus abdominis muscle is separated, you should consult a doctor to determine the cause and choose a treatment plan according to your condition.