The utility model relates to an adjustable elasticity jar of flexible cage shoe, the T type hook bolt of connecting hole is equipped with including the tip to and cylinder body and the dish spring shaft of setting in the cylinder body, dish spring shaft has cup jointed the dish spring, the flange contact that is equipped with on dish spring one end and the dish spring shaft, the dish spring otherend and cylinder body interior bottom surface contact, T type hook bolt is equipped with screw thread one end and pegs graft in dish spring shaft's connecting portion, T type hook bolt with be equipped with adjusting nut between the dish spring shaft tip, T type hook bolt passes through the nut is adjusted and is got into the degree of depth of connecting portion. The utility model has the advantages of it is more convenient to operate, reduces repair time, reduces intensity of labour, improves maintenance efficiency, more than operating time can lengthen for 3~April than traditional flexiblecage shoe regulation hydro -cylinder, have better popularization and application and be worth.