The invention discloses a boom barrier used for parking of vehicles and easy to disassemble. The boom barrier comprises a fixed block, wherein the top of the fixed block is provided with a groove; clamping grooves are formed in the bottoms of both sides of the inner wall of the groove; a box body is movably connected with the inner cavity of the groove; first sliding grooves are formed in both sides of the top of the inner wall of the box body; and second sliding grooves are formed in both sides of the bottom of the inner wall of the box body. Through the cooperation among the fixed block, the groove, the clamping grooves, the box body, the first sliding grooves, the second sliding grooves, fixed columns, third sliding grooves, third sliding blocks, connecting blocks, second pull rods, clamping blocks, second sliding blocks, sleeve rings, first pull rods, movable blocks, first sliding blocks, moving columns, springs and handles, the boom barrier used for the parking of the vehicles and easy to disassemble achieves the effect of facilitating the disassembly and saves time and effort and improves the working efficiency for maintenance workers when the maintenance workers disassemble the boom barrier used for the parking of the vehicles, thereby improving the inventiveness of the boom barrier used for the parking of the vehicles, and the boom barrier is suitable for popularization and use.