Polypropylene double-valve port for infusion bag, including fixed base, two liquid pipes and two connecting rings, two liquid pipes are placed side by side in the middle of the fixed base, the two ends of the outer periphery of the base have thin edges protruding outwards, the cross-sectional shape of the outer circumference of the base is a gradual and smooth transition from the center position of the two liquid pipes to the thin edges at both ends. The outer circumference of the base is fixed between the inner membranes replaced by the infusion bag, and the two connecting rings are fixed and connect with the infusion caps.