The invention relates to a carbonization activation integrated furnace, which includes a material chamber. The top of the material chamber is provided with a feed inlet, the bottom is provided with a discharge port, and the material chamber is used for storing and transporting materials. A drying section, a carbonization section, and an activation section that are communicated are disposed between the feed inlet and the discharge port from top to bottom in order. The furnace also includes a combustion chamber disposed outside the material chamber and used for heating materials in the material chamber. The activation section of the material chamber is equipped with a steam pipeline, which has several water vapor outlets molded in the vertical direction. The setting mode of the water vapor outlets enables water vapor to contact more materials in the vertical direction, and the water vapor outlets are uniformly distributed and are easy to operate. Meanwhile, water vapor moves in the horizontal direction, thus solving the problem that the pressure of materials above limits the upward movement range of water vapor.