To provide a sports inner boot that ensures removal from a sports outer boot to allow an inside to be easily washed and where a drying time be a comparatively short time. A sports inner boot made of a thermoplastic plastic includes a bottom plate disposed in the sports outer boot and a foot wrap portion formed at the bottom plate. The bottom plate and the foot wrap portion are integrally formed. The bottom plate and the foot wrap portion contain an ethylene vinyl acetate copolymer material (EVA).