The invention relates to the technical field of natural gas detection equipment, and discloses a natural gas connecting pipeline leakage detection control device, comprising a worktable, wherein one side of the top end of the worktable is fixedly provided with a mounting bracket, a motor is fixedly arranged in the mounting bracket, the outer wall of an output shaft of the motor is fixedly sleevedwith a winding drum I, one side of the mounting bracket is fixedly provided with a mounting box positioned at the top end of the worktable, the mounting box movably sleeves a threaded rod, the outer wall of the bottom of the threaded rod is fixedly sleeved with a winding drum II, and the outer wall of the winding drum II is in transmission connection with the outer wall of the winding drum I. According to the natural gas connecting pipeline leakage detection control device, through arranging the worktable, the mounting bracket, the motor, the winding drum I, the mounting box, the threaded rod,the winding drum II, the belt, a mounting plate, a telescopic support rod and limiting rods, two sets of mounting plates can be moved up and down, which is convenient for clamping pipelines and provides better detection conditions for later detection.