Restraint device for preventing sudden action of patient

The invention relates to the field of medical instruments, and discloses a restraint device for preventing sudden action of a patient, which comprises a bed body, a monitoring unit, a control unit, a restraint unit and an adjusting unit, the monitoring unit comprises a primary monitoring unit for monitoring the motion state of the patient and a secondary monitoring unit for monitoring the heart rate of the patient; the restraining unit comprises a wrist strap used for restraining arms of a patient and a chest strap used for restraining the body of the patient, the wrist strap is slidably connected with the first-stage monitoring unit, and the tightness of the chest strap can be adjusted through the adjusting unit; the control unit is used for controlling the adjusting unit according to the motion state of the patient and the heart rate of the patient, the control unit is electrically connected with the first-stage monitoring unit, the second-stage monitoring unit and the adjusting unit, and a wireless communi