In an electric shaver moving inner blades reciprocally and linearly, outer blades which are elongated in longitudinal direction are respectively held on outer blade frames and the outer blade frames are further held in floatable in floating direction on a frame holder. An outer blade mounting base has a pair of protrusions formed at positions near to both ends thereof in the longitudinal direction to protrude in the floating direction and the frame holder has a pair of end walls arranged in parallel in the longitudinal direction and a pair of engaging rims formed at both ends in the longitudinal direction. The engaging rims enclose the protrusions so as to position the frame holder to the outer blade mounting base when the frame holder is attached to the outer blade mounting base.