The invention belongs to the automobile field, and relates to a design method of a safe and reliable front air suspension guide plate protecting device for a passenger car. The front air suspension guide plate protecting device is characterized by comprising V-shaped limit grooves (1), a U-shaped plate (2), a baffle plate (3), a fastening band (4) and a fastening piece(5), wherein, the two V-shaped limit grooves (1) are fixedly connected on the left side and the right side of the U-shaped bending position at the inner side of the U-shaped plate (2) respectively; the baffle plate (3) is fixedly connected at an opening at the front side of the U-shaped plate (2) so that the V-shaped limit grooves (1), the U-shaped plate (2) and the baffle plate (3) form a cavity which is equipped with openings at two ends and V-shaped limit grooves for limit; the baffle plate (3) is equipped with the fastening band (4); the fastening band (4) is connected with the fastening piece (5); and the fastening band (4) is fixedly connected with a guide plate (6). The front air suspension guide plate protecting device has simple structure, high safety and convenient processing and assembly.