The invention provides a predelivery auxiliary exercise device which comprises a flexible pad, a shell is arranged at the end of the flexible pad, a mounting rod is rotatably arranged on the shell, a first sleeve is slidably mounted on the mounting rod, a supporting frame is hinged to the first sleeve, a leg support is hinged to the end of the supporting frame, and a slidable and rotatable mounting wheel is arranged in the shell. The first sleeve is sleeved with a connecting ring, a driving
rope is arranged on the connecting ring, the end of the driving
rope bypasses the mounting wheel and is connected with the shell, a resistance unit connected with the shell is arranged on the mounting wheel, a linkage
assembly connected with the driving
rope is arranged at the end of the mounting rod, and the driving rope is pulled through the linkage
assembly when the mounting rod rotates. By means of the device, leg muscles and
crotch muscles can be fully exercised, so that discomfort in the
pregnancy period is reduced, the elasticity of
pelvic cavity and
birth canal muscles is increased, pain in the production process is relieved, the time of the production process is shortened, and meanwhile laceration and bleeding of the
birth canal can be reduced.