Passive cushion applied to front-row seat

The utility model discloses a passive cushion applied to a front-row seat and matched with a front-row seat framework of a vehicle. The passive cushion comprises a supporting rod, a motor and an auxiliary steel cushion, wherein the auxiliary steel cushion is hinged to the middle part of the upper surface of a cushion framework through a hinge, a signal is transferred through an ECU (Electronic Control Unit), the motor is started if the occasion arises, and the rotation of the output end of the motor is finally output to form an uplink linear motion of the supporting rod; the front part of the cushion is supported to increase the angle of the cushion, thus, the forward motion quantity of a person can be effectively blocked in the collision process to protect the crus and the thigh of the person from being damaged; and by using the structure, the impact forces of the head and the chest of the person to an instrument board and a steering wheel can be effectively reduced while the forward motion quantity of the p