A reciprocating-type electric shaver comprising: outer blades ; oscillators that are driven to reciprocate by a motor installed inside a main body ; and an inner blade that reciprocates while coming into sliding contact with an inner surface of the outer blades in cooperation with the oscillator , wherein the oscillators include attachment portions that are located on both end sides, and that are respectively attached to the main body , movable bases that are located between the attachment portions , both end sides of which are supported by the attachment portions via support portions having a substantially U-shape in a front view, and that are driven to reciprocate by the motor in a state of being suspended from the attachment portions by the support portions , and cooperation portions that protrude from the movable bases , and that cooperate with the inner blade , wherein in the respective support portions , a portion on a side connected to the attachment portions is a linear portion of the U-shape and is formed as a flexible oscillating piece ; characterised in that at a stationary position of the movable bases , the respective oscillating pieces are formed to be tilted at angles of 0.5 degrees or more relative to a direction (X) orthogonal to a reciprocating direction of the movable bases so that a lower portion side of the respective oscillating pieces is open outward in the reciprocating direction of the movable bases . outer blades ; oscillators that are driven to reciprocate by a motor installed inside a main body ; and an inner blade that reciprocates while coming into sliding contact with an inner surface of the outer blades in cooperation with the oscillator , wherein the oscillators include attachment portions that are located on both end sides, and that are respectively attached to the main body , movable bases that are located between the attachment portions , both end sides of which are supported by the attachment portions via support portions having a substantially U-shape in a front view, and that are driven to reciprocate by the motor in a state of being suspended from the attachment portions by the support portions , and cooperation portions that protrude from the movable bases , and that cooperate with the inner blade , attachment portions that are located on both end sides, and that are respectively attached to the main body , movable bases that are located between the attachment portions , both end sides of which are supported by the attachment portions via support portions having a substantially U-shape in a front view, and that are driven to reciprocate by the motor in a state of being suspended from the attachment portions by the support portions , and cooperation portions that protrude from the movable bases , and that cooperate with the inner blade , wherein in the respective support portions , a portion on a side connected to the attachment portions is a linear portion of the U-shape and is formed as a flexible oscillating piece ; characterised in that at a stationary position of the movable bases , the respective oscillating pieces are formed to be tilted at angles of 0.5 degrees or more relative to a direction (X) orthogonal to a reciprocating direction of the movable bases so that a lower portion side of the respective oscillating pieces is open outward in the reciprocating direction of the movable bases . <EOS>