The utility model discloses an auxiliary device is removed on sled formula helicopter semi -mounted type ground, including two undercarriage anchor clamps, pass through the drawbar connection between the undercarriage anchor clamps, the undercarriage anchor clamps include half block and lower half block, and the one side of going up the half block is rotated with one side of half block down and is connected, and the opposite side of going up the half block passes through the quick -release and locks and be connected with the opposite side of lower half block, the upper end of going up the lower extreme of half block, lower half block all is equipped with grooved surface, goes up the grooved surface of half block and the grooved surface lock of lower half block and forms the logical groove of following the fore -and -aft direction and extending, the bottom of undercarriage anchor clamps is equipped with the truckle. The utility model discloses an auxiliary device is removed on sled formula helicopter semi -mounted type ground effectively locks the undercarriage of helicopter through the elastic deformation who installs the polyurethane in the recess additional, and the terrain clearance of sled undercarriage has been guaranteed to the double low gravity center bearing leg who chooses for use wheel, and stability when the guarantee is removed has simple structure, easy and simple to handle, the strong advantage of stability.