The utility model provides a limit switch position regulator for adjust the position of limit switch (5), including setting up the framework on valve yoke piece (8) and setting up installing support (6) in the framework, this framework has inner edge (15) of two parallels, the installing support includes supporting part (61) and respectively formed at two bellying (62) of supporting part bottom, during these two bulge do not stretch into the framework, and two bellyings separately the lateral wall paste respectively in two inner edges the slidable, position regulator is still including being used for drive installation support along the gliding actuating mechanism of inner edge, be provided with on the supporting part with inner edge vertically spout (16), position regulator includes still that slidable ground sets up on the spout, and supports location slider (18) that have limit switch. The utility model discloses an adjustable limit switch of position regulator makes limit switch use with the valve cooperation for the position of valve.