To provide sanitary inner slippers with which such uncomfortableness of stickiness that in using slippers in a hospital or the like, can be prevented, and with which infection of a skin decease can be prevented.

The inner slippers 1 to be fitted to the inside of existing slippers of polyvinyl chloride provided in a hospital or the like is formed into such a form as to be in contact with the whole range of the inner circumferential surface of existing polyvinyl chloride slippers 3, and to be easily fitted inside the existing polyvinyl chloride slippers 3 as left folding part 1c and right folding part 1d are folded to be put on each other, it is formed out of a water absorbing paper material, emboss-works surfaces having a number of protrusions are formed on the surface side and back surface side of them, and an antibacterial agent is impregnated in them.