The utility model provides an one -tenth dish instrument and with becoming set native anchor of polydisc of instrument preparation, one -tenth dish instrument include that the inside lining pipe locates the inlayer of one -tenth dish instrument is right one -tenth dish instrument played a supporting role, airbag sleeve locates the skin of interior bushing pipe has elasticity, follows the inside lining pipe diameter is to flexible, the clamp plate is located on the surface of gasbag, be equipped with the lug on the clamp plate, the clamp plate is followed the gasbag is followed the inside lining pipe diameter is radial movement to stretching out and drawing back. Polydisc soil anchor includes that the cylinder encircles with the spaced and locates the polydisc of the surface of cylinder. The utility model provides an one -tenth dish instrument adopts the gasbag to inflate and promotes clamp plate radial expansion, impresses the lug on clamp plate surface in the soil of drilling to forming a plurality of sets of chambeies through fill operations such as gassing, rotation and drawing many times, starching to cementing in expanding drilling well, treat that the grout solidifies into the disk body, each disk body is met native face and is received the pressure effect of being broken ground, finally can obtain higher anchor power.