The invention discloses an internal radiant heat type activated carbon production device which is beneficial for stable operation of activated carbon production and energy conservation and environment protection or beneficial for improving the quality of activated carbon. The internal radiant heat type activated carbon production device is characterized in that a carbon activation rotating furnace is included, the carbon activation rotating furnace is provided with a rotating furnace front end and a rotating furnace rear end, the rotating furnace front end is provided with a rotating furnace carbonized material feed port, the rotating furnace rear end is provided with a rotating furnace activated carbon discharge port, a heat radiation heating body is arranged in an inner cavity of the carbon activation rotating furnace in the axial direction of the inner cavity, a built-in heating device is arranged in the heat radiation heating body, the rotating furnace carbonized material feed port is connected with a feeding device, and the rotating furnace activated carbon discharge port is connected with the discharging device.