The present invention relates to a support beam mounting structure for a fishing pole support frame, which comprises: a base which is a body mounted on the flat support body of a fishing pole support frame fixed to the ground to be movable in upward, downward, left, and right directions and having a hollow space therein; a bar-shaped fixing device for a rear support beam, which is inserted through a through-hole formed on an upper part of the base, is disposed at a lower part of the through hole, has one end portion mounted in an insertion groove formed inside the hollow space of the base, and has the other end portion on which a rear support beam is mounted; a fixing device for a front support beam which is inserted in an inner hollow portion from the front of the base to fasten the fixing device for a rear support beam; a fastening adjustment screw which is inserted through a through hole formed on a front upper part of the base to fasten the fixing device for a front support beam; and an angle adjustment screw which is disposed in the rear of the base, is connected by a mounting bracket to a fixing plate mounted on the fishing pole support frame to adjust an up and down angle of the base. According to the above configuration, the support beam mounting structure prevents a fishing pole from moving by conveniently fastening the front and rear support beams for supporting the fishing pole, and by using a simple configuration to easily assemble and disassemble the front and rear support beams, enhances the convenience for a user. Further, the support beam mounting structure of the present invention improves the production costs and durability, thus reducing the costs for maintenance and repair, and maximizing marketability of the product.COPYRIGHT KIPO 2017본 발명은 낚시대 받침틀용 받침대 장착 구조물에 관한 것으로, 이러한 구조물은, 지면에 고정되는 낚시대 받침틀의 편평한 받침 몸체에 상하좌우로 이동가능하게 장착되되 내부가 중공으로 형성되는 몸체인 베이스와, 이 베이스의 상부에 형성된 관통 홀을 통해 삽입되고 상기 관통 홀의 하부에 위치하고 상기 베이스의 중공의 내부에 형성된 끼움 홈에 일단부가 안착되고 타단부는 후방 받침대가 장착