To provide a blade edge grinder capable of accurately and easily grinding blade edges corresponding to different blade edge angles of various edged tools with regard to the blade edge grinder which grinds the blade edges of the edged tools such as kitchen knife, knife and scissors.

A power supply switch 16 is turned on by sliding it to an ON side to allow a circular rotary plate 6 to be rotated. The position of a blade edge is fixed with the handle (not shown) of a kitchen knife 110 gripped by a hand, and the knife is pressed to allow the circular rotary plate 6 to almost parallel contact one side of the blade edge 112 formed at a predetermined blade edge angle θ. In this case, although directions of a grip section 2 and a connecting rod 4 are deviated from the surface of a cutting edge, for example, the grinding surface of a grindstone mounting section 10 is deviated at a small angle from the blade edge grinding surface of the edged tool, a sharpened blade edge can be easily obtained since the circular rotary plate 6 can be guided along the blade edge grinding surface by an elastic pad 8.