A medical puncture needle (1, 1', 100, 200) comprising: an end portion (3, 3', 103, 203) including a needle tip (8, 8', 80, 82); and a tubular main body portion (2, 102, 202) contiguous with the end portion (3, 3', 103, 203), having a substantially circular cross-sectional outer shape relative to the longitudinal axis of the tubular main body portion (2, 102, 202) extending in an axial direction, wherein the end portion (3, 3', 103, 203) includes a first bevel (5, 5', 50, 51, 52) formed by a curved surface, a second bevel (6, 6', 60, 61, 62) formed by another curved surface, wherein the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels have a cutting edge constituted by a first ridge (9, 9', 90, 92) formed where the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels intersect, the first ridge (9, 9', 90, 92) defining the needle tip (8, 8', 80, 82) at one end, an inclined surface (7, 7', 70, 71, 72) is provided contiguous with the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels and constituted by a flat surface that is inclined with respect to the longitudinal axis, thus defining an imaginary plane perpendicular to the inclined surface and including the longitudinal axis and defining a second ridge (12, 120a, 120b), formed at a position where the inclined surface is contiguous with the first bevel and the second bevel and in a direction orthogonal to the axial direction), said curved surfaces of said first and said second bevels each extending while being twisted from positions where the first bevel and the second bevel, respectively, are contiguous with the inclined surface, to the needle tip in the axial direction, the first bevel (5, 5', 50, 51, 52,) forming an angle (Θ) relative to the imaginary plane, said angle (Θ) gradually decreasing toward the needle tip (8, 8', 80, 82). an end portion (3, 3', 103, 203) including a needle tip (8, 8', 80, 82); and a tubular main body portion (2, 102, 202) contiguous with the end portion (3, 3', 103, 203), having a substantially circular cross-sectional outer shape relative to the longitudinal axis of the tubular main body portion (2, 102, 202) extending in an axial direction, wherein the end portion (3, 3', 103, 203) includes a first bevel (5, 5', 50, 51, 52) formed by a curved surface, a second bevel (6, 6', 60, 61, 62) formed by another curved surface, wherein the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels have a cutting edge constituted by a first ridge (9, 9', 90, 92) formed where the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels intersect, the first ridge (9, 9', 90, 92) defining the needle tip (8, 8', 80, 82) at one end, an inclined surface (7, 7', 70, 71, 72) is provided contiguous with the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels and constituted by a flat surface that is inclined with respect to the longitudinal axis, thus defining an imaginary plane perpendicular to the inclined surface and including the longitudinal axis and defining a second ridge (12, 120a, 120b), formed at a position where the inclined surface is contiguous with the first bevel and the second bevel and in a direction orthogonal to the axial direction), said curved surfaces of said first and said second bevels each extending while being twisted from positions where the first bevel and the second bevel, respectively, are contiguous with the inclined surface, to the needle tip in the axial direction, the first bevel (5, 5', 50, 51, 52,) forming an angle (Θ) relative to the imaginary plane, said angle (Θ) gradually decreasing toward the needle tip (8, 8', 80, 82). a first bevel (5, 5', 50, 51, 52) formed by a curved surface, a second bevel (6, 6', 60, 61, 62) formed by another curved surface, wherein the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels have a cutting edge constituted by a first ridge (9, 9', 90, 92) formed where the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels intersect, the first ridge (9, 9', 90, 92) defining the needle tip (8, 8', 80, 82) at one end, an inclined surface (7, 7', 70, 71, 72) is provided contiguous with the first (5, 5', 50, 51, 52) and second (6, 6', 60, 61, 62) bevels and constituted by a flat surface that is inclined with respect to the longitudinal axis, thus defining an imaginary plane perpendicular to the inclined surface and including the longitudinal axis and defining a second ridge (12, 120a, 120b), formed at a position where the inclined surface is contiguous with the first bevel and the second bevel and in a direction orthogonal to the axial direction), said curved surfaces of said first and said second bevels each extending while being twisted from positions where the first bevel and the second bevel, respectively, are contiguous with the inclined surface, to the needle tip in the axial direction, the first bevel (5, 5', 50, 51, 52,) forming an angle (Θ) relative to the imaginary plane, said angle (Θ) gradually decreasing toward the needle tip (8, 8', 80, 82).