The invention discloses a pre-war rescue simulation training device based on MR technology, which comprises an MR glasses module, a mounting head ring, an electric control box and a simulation training system; the simulation training system comprises five rescue modules, namely a wounded evaluation module, an airway management module, a hemostasis and low blood volume shock management module, a tension pneumothorax treatment module and a fracture splint fixation module; the front end of the mounting head ring is hinged with the MR glasses module, and the rear end of the mounting head ring is fixedly connected with the electric control box. The invention provides a battlefield rescue training scheme based on the MR technology, a virtual-real fusion battlefield is constructed by fusing a real combat casualty scene and a specific virtual environment, diversified first-aid environment training is provided for rescue personnel, battlefield rescue is more effectively and vividly simulated, the exercise training cost can be reduced, and the battlefield rescue effect is rapidly and comprehensively improved, and the medical service guarantee capacity is improved.