The invention relates to a die erecting machine which comprises a die clamping mechanism, a die overturning mechanism and a safety frame. The safety frame is arranged on one side of the die overturning mechanism. The die erecting machine is characterized in that the die clamping mechanism comprises two hooking and supporting arms and a first hydraulic cylinder, and the two hooking and supporting arms are connected to the two ends of the first hydraulic cylinder respectively; the die overturning mechanism comprises a fixing frame, two supporting arm side plates and a second hydraulic cylinder; the hooking and supporting arms are arranged between the two supporting arm side plates and are connected with the supporting arm side plates in a sliding mode; the fixing frame is fixed to a foundation, the bottom of the safety frame is fixedly connected with the fixing frame, and the left end of the fixing frame is hinged to the left ends of the supporting arm side plates; the push rod head of the second hydraulic cylinder is hinged to the lower ends of the supporting arm side plates; a second hydraulic cylinder body is hinged to the fixing frame. According to the machine, the die clamping mechanism clamps a sleeper steel die, the die overturning mechanism erects the steel die, the safety frame prevents the steel die from rolling, producers mount a sleeve and an iron base on the steel die conveniently, and efficiency is improved.