A front independent suspension system for a commercial vehicle comprises a spiral spring, a torsion bar spring, a U-shaped upper swing arm, a U-shaped lower swing arm. A front upper left arm foot anda rear upper left arm foot of the upper swing arm are connected with a vehicle frame, and upper right arm feet are connected with the top end of a steering knuckle support through eccentric pins. Thebottom end of the steering knuckle support is connected with lower right arm feet of the lower swing arm, and a front lower left arm foot and a rear lower left arm foot are connected with the vehicleframe. The portion, located between the top end and the bottom end of the steering knuckle support, on the steering knuckle support makes contact with the bottom end of the spiral spring. The top endof the spiral spring penetrates through a gap between the front upper left arm foot and a rear upper left arm foot from bottom to top to be connected with the bottom end of a spiral spring mounting support. The portion, close to the front upper left arm foot, on the upper swing arm is connected with one end of the torsion bar spring through a torsion bar spring mounting support, and the other endof the torsion bar spring is connected with the vehicle frame. According to the design, the large-load requirement can be met, the reliability is high, the strength is large, the guiding effect is good, the occupied space is small, the cost is low, and the control stability and travelling smoothness of the vehicle are achieved advantageously.