The present invention relates to a gongpo assembly structure of a traditional Korean-style house and temple, the gongpo assembly structure including: at least one gongpo fixing member provided with an interlocking slot formed in a shape depressed toward lower and inward directions from an surface thereof, and laid one upon another by being fastened to the fixed object; a judu provided with a wide open groove formed on a center of a top surface thereof and an interlocking protrusion formed on one side wall thereof and interlocked with the interlocking slot of the gongpo fixing member; and a gongpo provided with an interlocking slot and interlocking protrusion, and assembled with a top of the judu. Accordingly, the gongpo may be standardized and mass-produced at a factory, thereby allowing a general technician to easily perform work only done by a master previously.