PURPOSE: To facilitate the connection between column and beam of reinforced concrete construction.

CONSTITUTION: Reinforced concrete beams 3 in four directions of a connecting part are integrated together in the state where they are arranged nearly in cross to form a precast body 5 having a through-hole 4 for passing the reinforcements 2a of a reinforced concrete column 2 in the cross part. In the inner part of the through-hole 4, a number of reinforcements 3a of each reinforced concrete beam 3 are protruded and exposed in the crossed state, and the reinforcements 2a of the reinforced concrete column 2 can be inserted thereto. Further, after the reinforcements are inserted into the through-hole of the precast body 5, concrete is placed to connect and integrate the column 2 to the beams 3. By connecting each beam 3 to the column 2 in the cross part of the 3 in the precast body 5, rationalization such as reduction in assembling of reinforcements, increase in diversion of molds, and reduction in number of assembling processes is attained to enhance safety and reduce cost.