An electric shaver comprising: an outer blade (21, 921, 121A); an inner blade (40, 940, 140D); an inner blade joint component; and a skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D), wherein the outer blade (21, 921, 121A) includes an outer blade hole, the inner blade (40, 940, 140D) includes an inner blade main body wall (41, 941, 141A), a plurality of blade pieces (42, 942, 142A), an inner blade hole (43, 943, 143A), and an inner blade internal space (44, 944, 144A), wherein the inner blade (40, 940, 140D) rotates or moves back and forth relative to the outer blade (21, 921, 121A) to cut hair drawn in through the outer blade hole, the inner blade main body wall (41, 941, 141A) is coupled to the inner blade joint component, and the inner blade internal space (44, 944, 144A) is surrounded by the inner blade main body wall (41, 941, 141A) and the plurality of blade pieces (42, 942, 142A), the electric shaver being characterized in that the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D), which differs from the inner blade (40, 940, 140D), is located in the inner blade internal space (44, 944, 144A) at a position corresponding to the inner blade hole (43, 943, 143A) with a space (SA, SB) between the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) and the inner blade (40, 940, 140D), and the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) is configured to come into contact with a skin that enters the inner blade internal space (44, 944, 144A) through the inner blade hole (43, 943, 143A) with leaving the space (SA, SB) between the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) and the inner blade (40, 940, 140D) to prevent the skin from entering the inner blade internal space (44, 944, 141A) or to reduce the amount of skin entering the inner blade hole (43, 943, 143A). an outer blade (21, 921, 121A); an inner blade (40, 940, 140D); an inner blade joint component; and a skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D), wherein the outer blade (21, 921, 121A) includes an outer blade hole, the inner blade (40, 940, 140D) includes an inner blade main body wall (41, 941, 141A), a plurality of blade pieces (42, 942, 142A), an inner blade hole (43, 943, 143A), and an inner blade internal space (44, 944, 144A), wherein the inner blade (40, 940, 140D) rotates or moves back and forth relative to the outer blade (21, 921, 121A) to cut hair drawn in through the outer blade hole, the inner blade main body wall (41, 941, 141A) is coupled to the inner blade joint component, and the inner blade internal space (44, 944, 144A) is surrounded by the inner blade main body wall (41, 941, 141A) and the plurality of blade pieces (42, 942, 142A), the electric shaver being characterized in that the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D), which differs from the inner blade (40, 940, 140D), is located in the inner blade internal space (44, 944, 144A) at a position corresponding to the inner blade hole (43, 943, 143A) with a space (SA, SB) between the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) and the inner blade (40, 940, 140D), and the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) is configured to come into contact with a skin that enters the inner blade internal space (44, 944, 144A) through the inner blade hole (43, 943, 143A) with leaving the space (SA, SB) between the skin guard (60, 260, 360, 660, 760, 860, 960, 160B, 160C, 160D) and the inner blade (40, 940, 140D) to prevent the skin from entering the inner blade internal space (44, 944, 141A) or to reduce the amount of skin entering the inner blade hole (43, 943, 143A).