The invention relates to a device for recycling reversely-released gas of a PSA (Primary Secondary Amine) purification section to a refinement section. According to the device, a recycled gas cabinet is connected with the bottom of a purification tower by a line pipeline; the purification tower is connected with the bottom of a reverse releasing tank through a line pipeline; the reverse releasing tank is connected with a refinement tank by a line pipeline and is connected with a scavenging tank by a line pipeline; the scavenging tank is connected with a gas releasing pipe by a line pipeline and the line pipeline is controlled by a valve and is further connected with a line pipeline controlled by a valve of the recycled gas cabinet; or the scavenging tank is connected with the gas releasing pipe by the line pipeline controlled by the valve and the line pipeline passes through the line pipeline controlled by the valve and then is connected with the purification tower. The bottom of the purification tower is further connected with the gas releasing pipe by the line pipeline between the recycled gas cabinet and the purification tower; the gas releasing pipe is connected with a recycling tank by a line pipeline and the recycling tank is connected with the refinement tank by a line pipeline. With the adoption of the equipment and the process, the production cost can be reduced effectively, resources are saved and the influences to the environment are weakened. The recycling device can be used for industrially producing in a large batch.