The invention discloses a variable displacement injection-production integrated lifting device. The variable displacement injection-production integrated lifting device comprises a pump barrel, a plunger and a liquid discharge valve, wherein the pump barrel comprises an upper pump barrel and a lower pump barrel, the plunger comprises an inner plunger, an outer plunger and a lower plunger, the lower end of the upper pump barrel is connected with the upper end of the lower pump barrel, the lower end of the inner plunger is connected with the liquid discharge valve, the lower end of the liquid discharge valve is connected with the lower plunger, the lower plunger slides in the lower pump barrel, the outer plunger sleeves outside the inner plunger through a suspension mechanism, the inner plunger and the outer plunger slide in the upper pump barrel together, the inner wall of the upper pump barrel is provided with a release step, and the lower end face of the release step faces the upper end face of the outer plunger to form axial limit, so that the outer plunger is separated from the inner plunger. The variable displacement injection-production integrated lifting device improves the convenience of displacement switching of the variable displacement device and simultaneously realizes injection and production integrated lifting.