Hand restraint strap for psychiatric nursing

The utility model discloses a hand restraint strap for psychiatric nursing, and relates to the technical field of psychiatric nursing. The fixing device comprises a first fixing plate and a second fixing plate, one surface of the first fixing plate is fixedly connected with a rotating shaft; one surface of the second fixing plate is rotationally connected with the second fixing plate through a rotating shaft; openings are formed in one surface of the first fixing plate and one surface of the second fixing plate. Restraining devices are slidably connected to the inner surfaces of the openings,arc-shaped grooves and fixing grooves are formed in the restraining devices correspondingly, the tops of the fixing grooves communicate with the arc-shaped grooves, buttons are fixedly connected to the arc surfaces of the tops of the restraining devices, a plurality of fixing rods are fixedly connected to one surface of each button, and a spring pin is fixedly connected to one end of each fixing rod. The spring pin struct