The utility model discloses a postoperative nursing correction trainer for cardiothoracic surgery. Including a care correction pad, waist fixing straps are arranged below two side pressure shoulder straps which are symmetrically arranged on two side walls of the nursing correction pad; air holes are formed in the nursing correction pad; a plurality of supporting air bags are arranged below the airholes; a magic tape protective film is arranged on a waist fixing magic tape fixedly mounted on the waist fixing tape; one end of a cross-shaped telescopic elastic mesh belt fixed to the rear portionof the nursing correction pad is arranged on the side pressing shoulder belt, and a cross-shaped guide belt hook-and-loop fastener barb belt is arranged on a double-Y-shaped cross guide belt fixed tothe end, away from the side pressing shoulder belt, of the cross-shaped telescopic elastic mesh belt. Through the arrangement of the side pressure shoulder straps, the supporting air bag, the double-Y-shaped crossed leading strap, the spine memory supporting plastic plate and the pressure isolation base, the problems that in the wound healing process, a patient is prone to scratching, secondary injuries are caused, a cardiothoracic wound cannot be completely unfolded, and wound healing is inconvenient are solved.