A scroll compressor is provided that may include a casing, a drive motor, a rotational shaft, a frame provided at a lower side of the drive motor, a first scroll provided at a lower side of the frame, a second scroll provided between the frame and the first scroll and including a compression chamber provided between the first scroll and the second scroll, and a first check valve provided at an exit end of the discharge port to prevent refrigerant discharged to the inner space of the casing from flowing back to the compression chamber. A communication path may be provided at the exit end of the discharge port to communicate the inner space of the casing with the compression chamber when the first check valve is closed to cause refrigerant to flow back to the compression chamber, enabling a quick flat pressure state to be made.