Low-resilience-amount return-stroke-controllable nitrogen spring and operation method

The invention discloses a low-resilience-amount return-stroke-controllable nitrogen spring and belongs to the technical field of elastic element products. The low-resilience-amount return-stroke-controllable nitrogen spring comprises a working cylinder, a piston, a piston rod and gas paths, and is characterized in that an inner cavity of the working cylinder is divided into three inflation cavities, namely a first cavity, a second cavity and a third cavity, the first cavity is a rod cavity, and the second cavity is a rodless cavity; the first cavity and the second cavity are separated throughthe piston, and the size of the first cavity and the size of the second cavity change along with the change of the compression stroke of the spring; the third cavity is a fixed cavity and can be designed into different sizes, and the larger the size of the third cavity is, the better the effect of eliminating the resilience amount is; the first cavity, the second cavity and the third cavity communicate with one another th