To provide a false nail which is easily put on simply by lightly pressing this false nail to the nail of the human body, is removable simply by lightly pushing the false nail up with the fingertip, does not allow a tacky adhesive to remain on the nail side of the human body after removal and allows the repetitive wear of the same false nail.

The structure of the false nail has a primer coat treating agent layer 2 formed over the entire surface of the rear surface of a false nail body l made of a synthetic resin or the surface where the false nail comes into contact with the nail of the human body and a tacky adhesive layer 3 formed on the surface of the rear surface of the primer coat treating agent layer 2, which surface comes into contact with the nail of the human body. This process for producing the false nail consists in forming the false nail body by the synthetic resin so as to correspond to the nail of the human body, uniformly applying the primer coat treating agent on the entire surface of the rear surface of the false nail body or the surface that the false nail comes into contact with the nail of the human body to form the primer coat treating agent layer 2 and uniformly applying the tacky adhesive on the surface of the rear surface of the primer coat treating agent layer 2, which surface comes into contact with the nail of the human body, thereby forming the tacky adhesive layer 3.