A gas injection module and an active gas injection system are provided. The gas injection module includes a device body, the internal of which has a delivering cavity and an annular gas-flow generation cavity. One end of the device body has a gas input portion, and another end thereof has a gas output portion. One side of the device body is configured to extend outward to form a gas guiding portion. The annular gas flow generation cavity includes a side connecting portion and a nozzle portion in spatial communication with each other. The side connecting portion is connected to the gas guiding portion. The nozzle portion is connected to the delivering cavity. The nozzle portion is configured for generating a pushing gas-flow in a pre-determined path toward the delivering cavity. A pre-determined angle between 0-89 degrees is between the pre-determined path and central axis of the device body.