The invention provides an automobile plate spring guide arm. A curled lug is arranged upwards at one end of a flat and straight plate spring. The automobile plate spring guide arm is characterized in that a Z-shaped plate spring is arranged downwards at the other end of the flat and straight plate spring and side edges are bent from the bottom edge to the side faces of the Z-shaped plate spring; the side edges are arranged on the two sides of the bottom edge of the Z-shaped plate spring; a supporting arm and the flat and straight plate spring are perpendicular to the bottom edge of the Z-shaped plate spring; and the included angle formed by each side edge and the bottom edge of the Z-shaped plate spring ranges from 30 degrees to 50 degrees and the distance between an air bag installation center position on each side edge and the center of the supporting arm is not larger than 120 mm. By the adoption of the automobile plate spring guide arm, the beneficial effects of the flat and straight plate spring and Z-shaped and side bent type plate spring guide arms are combined, the problems existing in air spring design height and transverse arrangement space are well solved, the mechanical characteristic of a spring steel material is brought into full play, a composite air suspension structure is simplified, and the requirement for the low weight of a whole automobile is met; and the composite air suspension structure is better optimized, the number of parts is reduced, and the requirement for the low weight design of the whole automobile is met.