A surface-coated cutting tool includes a tool body in which at least a cutting edge is made of a cubic boron nitride sintered body and a hard coating layer which is deposited on the tool body, wherein, (a) the cubic boron nitride sintered body is made of cubic boron nitride particles, and a bonded phase which includes at least one or more components selected from a group consisting of nitride, carbide, carbonitride and boride of Ti and nitride and oxide of Al, and inevitable impurities, (b) an average grain size of the cubic boron nitride particles is 0.5 to 4.0 μm, a volume ratio of the cubic boron nitride particles in total volume of the cubic boron nitride sintered body is 40 to 70% by volume, and further, an average grain size of the bonded phase is 1 μm or less, (c) the hard coating layer consists of an A layer that coats a surface of the tool body and a B layer that coats a surface of the A layer, (d) the A layer satisfies 0.35 ≤ x ≤ 0.6 by an atom ratio in the A layer having a composition expressed by compositional formula (Al 1-x Ti x )N, and the B layer satisfies 0.35 ≤ y ≤ 0.6 and 0.01 ≤ z ≤ 0.1 by an atom ratio in the B layer having a composition expressed by compositional formula (Al 1-y-z Ti y Si z )N, (e) an average total layer thickness of the A layer and the B layer is 1.5 to 4.0 μm, and satisfies 2 ≤ t B /t A ≤ 5, wherein an average layer thickness of the A layer is t A and an average layer thickness of the B layer is t B , and (f) in an X-ray diffraction performed on the entire hard coating layer consisting of the A layer and the B layer, the entire hard coating layer has a rock salt type cubic crystal structure, and 3 < I II ≤ 12 is satisfied when a diffraction peak intensity of a plane of crystal grains that configure the hard coating layer is I and a diffraction peak intensity of a plane of crystal grains that configure the hard coating layer is I , and a full width at half maximum of a peak of I is 0.3 to 1.0. (a) the cubic boron nitride sintered body is made of cubic boron nitride particles, and a bonded phase which includes at least one or more components selected from a group consisting of nitride, carbide, carbonitride and boride of Ti and nitride and oxide of Al, and inevitable impurities, (b) an average grain size of the cubic boron nitride particles is 0.5 to 4.0 μm, a volume ratio of the cubic boron nitride particles in total volume of the cubic boron nitride sintered body is 40 to 70% by volume, and further, an average grain size of the bonded phase is 1 μm or less, (c) the hard coating layer consists of an A layer that coats a surface of the tool body and a B layer that coats a surface of the A layer, (d) the A layer satisfies 0.35 ≤ x ≤ 0.6 by an atom ratio in the A layer having a composition expressed by compositional formula (Al 1-x Ti x )N, and the B layer satisfies 0.35 ≤ y ≤ 0.6 and 0.01 ≤ z ≤ 0.1 by an atom ratio in the B layer having a composition expressed by compositional formula (Al 1-y-z Ti y Si z )N, (e) an average total layer thickness of the A layer and the B layer is 1.5 to 4.0 μm, and satisfies 2 ≤ t B /t A ≤ 5, wherein an average layer thickness of the A layer is t A and an average layer thickness of the B layer is t B , and (f) in an X-ray diffraction performed on the entire hard coating layer consisting of the A layer and the B layer, the entire hard coating layer has a rock salt type cubic crystal structure, and 3 < I II ≤ 12 is satisfied when a diffraction peak intensity of a plane of crystal grains that configure the hard coating layer is I and a diffraction peak intensity of a plane of crystal grains that configure the hard coating layer is I , and a full width at half maximum of a peak of I is 0.3 to 1.0. <EOS>