To provide a cup insole by which the foot bottom can be made perfectly fit to the shoe insole and buffer a shock loaded on the foot bottom in walking to prevent the heel bone from a rotating-out position and a rotating-in position.

This cup insole comprises a body member 28, a body member supporting member 29, and a heel part corresponding member 30. The cup insole is molded of a high density low repulsion urethane resin. A part 51 made of a high repulsion urethane resin is fit into a position corresponding to the heel of the heel part corresponding member 30. An inside arch protecting member 38, outside arch protecting member 39, and a second heel part protecting member 40 are respectively connected to be integrally erected from the bottom part of the body member 28. A second mid-foot part corresponding part is structured swollen up from right and left sides of the body member supporting member 29 to the center in the lateral direction and from the heel direction and both sides of the step part to the center. At least one projection 49 to be inserted into insertion holes 35 bored in the body member 28 with penetrating holes in the vertical direction is projectingly provided from the second mid-foot part corresponding part.