A bipod dual-mount attachment structure consisting of a leg attachment base, an axle housing, an attachment base, a pivot shaft, a saddle base, a lift control screw, an adjustment knob, a male swivel stud clamp and a female swivel stud clamp. When rotating the adjustment knob clockwise or counter-clockwise, the lift control screw is moved upward or downward to extend out the male and female swivel stud clamps for securing a gun that is equipped with a swivel stud, or to receive the male and female swivel stud clamps for securing a gun that is equipped with a rail, achieving dual use.