The present invention relates to a method for forming a precast concrete structure to improve construction productivity of a rigid-frame structure, a wall type structure, and foundation construction in a construction site. Specifically, the present invention relates to an independent connection structure for connection of a column and a beam. A structural steel plate or a structural sectional steel is processed and is processed in a factory to enable assembly of a high strength bolt. After an addition work of arrangement of reinforced bars in accordance with a structure design plan is performed on a bonding member or a structural member, mold installation concrete or mortar is placed and cured to obtain required strength of a product. So, the independent connection structure for the connection of the column and the beam easily constructs a precast concrete structure and the various bonding members in the site. According to the present invention, the independent connection structure is connected to a column of a building. The independent connection structure includes: a container-shaped connection structure body (21); a plate-shaped connection base plate (22) positioned on one side or both sides of the connection structure body (21); and a column connection panel unit (23) connected in the direction of a normal line of the connection base plate (22) and having multiple column connection holes (231) for connection. The column connection panel units (23) on both sides and a column panel unit (41) are connected by a column connection unit (230) connected by being inserted into the column connection holes (231) on both sides and a column coupling hole (411) by crossing and being connected with the column panel unit (41) of the column (40).