The utility model belongs to the technical field of drag force measuring device and specifically relates to a heaving pile drags force measuring device for experiments which includes: the fixed plate, two guide rails of parallel arrangement, the guide rail is installed on the fixed plate, two guide rails respectively be equipped with a force sensor with one end, force sensor can dismantle with the fixed plate and be connected, and a slider is established to each set on two guide rails, be connected through not extensible rope between force sensor and the slider, rope length is less than smooth guide rail length, anchor chain mechanism, its both ends are connected with the slider through not extensible rope respectively. The utility model discloses be the anchor chain establishment of institution transversely, avoided the measuring error owing to each position velocity of flow difference of anchor chain causes to keep the anchor chain tight in whole experimentation, reduced the deformation error that vertical device commonly used probably results in, also make anchor chain length adjustable simultaneously.