A blade member in which a surface of a base plate forming a cutting edge is coated with a coating layer, wherein the coating layer includes a non-nitrided layer coating the surface of the base plate and a nitrided layer coating a surface of the non-nitrided layer, being characterized in that: the non-nitrided layer contains Ti, Al, and Cr, the non-nitrided layer has a thickness of 30 to 70 nm, Ti, Al, and Cr in the non-nitrided layer each has the number of atom a, b, and c, the ratio of numbers of atoms a: b: c of Ti, Al, and Cr in the non-nitrided layer is set in such a manner as to satisfy a + b + c =1, 0.25 ≤ a ≤ 0.75, 0.25 ≤ b ≤ 0.75, and c = 0 in the range from the surface of the base plate to a point corresponding to the thickness of 5 to 20 nm, and the ratio of numbers of atoms a: b: c is set in such a manner as to satisfy a + b + c =1, 0.02 ≤ a ≤ 0.30, 0.55 ≤ b ≤ 0.765, and 0.06 ≤ c in the range corresponding to the thickness of 30 to 70 nm, the relative proportion of Ti, Al, and Cr of the non-nitrided layer varies along a direction of a thickness of the non-nitrided layer, the nitrided layer contains Ti, Al, Cr, and N, the nitrided layer has a thickness of 50 to 90 nm, the ratio of number of atoms a: b: c of Ti, Al, and Cr of the nitrided layer, except for nitrogen N, is set in such a manner as to satisfy 0.02 ≤ a ≤ 0.30, 0.55 ≤ b ≤ 0.765, 0.06 ≤ c, the ratio of numbers of atoms (a + b + c = 1): d between the combination of Ti, Al and Cr, and N is set in such a manner as to satisfy 0.5 ≤ d ≤ 1, wherein d indicates the number of nitrogen atom in the nitrided layer, the relative proportion of Ti, Al, Cr, and N is set constant at a predetermined depth from the surface of the nitrided layer, the ratio between the thickness of the nitrided layer and the thickness of the non-nitrided layer is in the range form 1:1 to 2:1, and the hardness of the nitrided layer is greater than the hardness of the non-nitrided layer. the non-nitrided layer contains Ti, Al, and Cr, the non-nitrided layer has a thickness of 30 to 70 nm, Ti, Al, and Cr in the non-nitrided layer each has the number of atom a, b, and c, the ratio of numbers of atoms a: b: c of Ti, Al, and Cr in the non-nitrided layer is set in such a manner as to satisfy a + b + c =1, 0.25 ≤ a ≤ 0.75, 0.25 ≤ b ≤ 0.75, and c = 0 in the range from the surface of the base plate to a point corresponding to the thickness of 5 to 20 nm, and the ratio of numbers of atoms a: b: c is set in such a manner as to satisfy a + b + c =1, 0.02 ≤ a ≤ 0.30, 0.55 ≤ b ≤ 0.765, and 0.06 ≤ c in the range corresponding to the thickness of 30 to 70 nm, the relative proportion of Ti, Al, and Cr of the non-nitrided layer varies along a direction of a thickness of the non-nitrided layer, the nitrided layer contains Ti, Al, Cr, and N, the nitrided layer has a thickness of 50 to 90 nm, the ratio of number of atoms a: b: c of Ti, Al, and Cr of the nitrided layer, except for nitrogen N, is set in such a manner as to satisfy 0.02 ≤ a ≤ 0.30, 0.55 ≤ b ≤ 0.765, 0.06 ≤ c, the ratio of numbers of atoms (a + b + c = 1): d between the combination of Ti, Al and Cr, and N is set in such a manner as to satisfy 0.5 ≤ d ≤ 1, wherein d indicates the number of nitrogen atom in the nitrided layer, the relative proportion of Ti, Al, Cr, and N is set constant at a predetermined depth from the surface of the nitrided layer, the ratio between the thickness of the nitrided layer and the thickness of the non-nitrided layer is in the range form 1:1 to 2:1, and the hardness of the nitrided layer is greater than the hardness of the non-nitrided layer.