The rectus abdominis muscle separation index can be measured by physical examination palpation and imaging. 1. Physical examination palpation: lie flat on the bed, bend both legs, put one finger above the navel, raise the head and shoulders, look toward the navel, and press down with the finger to feel the width of the depression, which is the width of rectus abdominis muscle separation. 1-2 fingers belong to the normal width, 2-3 fingers need to cooperate with the postnatal recovery exercise, 3 fingers belong to excessive separation, which needs surgical treatment. 2. Imaging examination: Through ultrasound, CT, MRI and other imaging examinations, the rectus abdominis muscle separation index can be measured directly. The rectus abdominis muscle separation index can be measured by physical examination, palpation and imaging. In case of mild diastasis recti separation, it is recommended to carry out postpartum recovery exercises under the guidance of a specialized doctor, combined with conservative treatments, such as lap-banding, to slow down the progression of the disease. For severe rectus abdominis separation, surgical repair should be carried out after a clear diagnosis.