The utility model discloses an intensive mixing reation kettle belongs to chemical industry technical field, has solved the problem of the unable intensive mixing of stirring reation kettle among the prior art. An intensive mixing reation kettle, includes the cauldron physically, internal agitator first and the agitator second of being equipped with of cauldron, first outer lane in the agitator is equipped with the stirring frame, be equipped with a plurality of openings on the stirring frame. The utility model relates to an intensive mixing reation kettle novel structure, the stirring is abundant, and application scope is wide, be equipped with spiral agitator and oar leaf agitator in the reation kettle, can upwards carry out abundant stirring simultaneously in axial and footpath, the first outer lane in the agitator still is equipped with the stirring frame, evenly on the stirring frame is equipped with a plurality of openings, and the opening can increase the convection current of the internal stirring liquid of cauldron, prevents to stir liquid and glues on the cauldron wall.