The invention discloses an A-shaped arm independent suspension system comprising an upper spring seat, a high-strength steel pipe structure A-shaped arm and a high-strength half shaft body. The upper spring seat is arranged on a vehicle chassis. Front suspension supports are arranged in the position, on the front portion the upper spring seat, of the vehicle chassis; a rear suspension support is arranged in the position, on the rear portion the upper spring seat, of the vehicle chassis; the high-strength half shaft body is arranged under the upper spring seat; a tire is mounted at the inner side end head of the high-strength half shaft body; the front portion of the outer side end head of the high-strength half shaft body is connected with one end of the high-strength steel pipe structure A-shaped arm, and the other end of the high-strength steel pipe structure A-shaped arm is connected with the front suspension supports; and the rear portion of the outer side end head of the high-strength half shaft body is connected with one end of a two-way damping shock absorber. The problem occurring when a vehicle travels on a bumpy road is solved, and the phenomena that the vehicle sticks in the mud, and the vehicle turns over due to imbalance landing of the left and right tires are prevented. The A-shaped arm independent suspension system is adopted, so that when the vehicle has the efficient passing ability when traveling on the bumpy road, and the life of the vehicle is prolonged.