A rotary compressor, comprising: a cylindrical hermetic case extending in an up-and-down direction; an electric motor which is housed at an upper portion in the hermetic case; a compression mechanism portion which is housed at a lower portion in the hermetic case and is driven via a rotary shaft connected to the electric motor, the rotary shaft extending in the up-and-down direction; and a discharge pipe which is provided at the upper portion in the hermetic case, wherein the compression mechanism portion has two cylinders (16a, 16b) arranged in the up-and-down direction which have covered upper and lower both ends and cylinder chambers (20a, 20b) formed inside, compresses a working fluid by eccentric rotation of a roller (22a, 22b) fitted to the rotary shaft in the cylinder chambers and discharges the compressed working fluid into the hermetic case, the electric motor has a rotor which rotates with the rotary shaft and a stator which surrounds the outer periphery of the rotor, a discharge flow channel which extends in the up-and-down direction and leads the working fluid discharged from the insides of the cylinder chambers (20a, 20b) to a side of the discharge pipe is formed in the electric motor, and when the rotary compressor is in use, it is suitable for that the maximum discharge pressure of the working fluid becomes three or more MPa, wherein the rotary compressor is characterized in that the electric motor has six or more poles, and the following relational expressions to are satisfied, where an inner diameter of the cylinder chambers (20a, 20b) is D1, the sum of heights of the cylinder chambers (20a, 20b) of the two cylinders (16a, 16b) in the up-and-down direction is H, a distance from an upper end portion of the stator to an inner wall surface of an upper portion of the hermetic case in the up-and-down direction is L1, a sectional area of an inner side space portion of the hermetic case in a plane perpendicular to the up-and-down direction is Ac, a total sectional area of the discharge flow channel in a plane perpendicular to the up-and-down direction is Ad and a thickness of a stator core of the stator in the up-and-down direction is T: 0.85 × D 1 < H < L 1 0.06 < Ad / Ac < 0.13 1.2 < T / H < 1.5 a cylindrical hermetic case extending in an up-and-down direction; an electric motor which is housed at an upper portion in the hermetic case; a compression mechanism portion which is housed at a lower portion in the hermetic case and is driven via a rotary shaft connected to the electric motor, the rotary shaft extending in the up-and-down direction; and a discharge pipe which is provided at the upper portion in the hermetic case, wherein the compression mechanism portion has two cylinders (16a, 16b) arranged in the up-and-down direction which have covered upper and lower both ends and cylinder chambers (20a, 20b) formed inside, compresses a working fluid by eccentric rotation of a roller (22a, 22b) fitted to the rotary shaft in the cylinder chambers and discharges the compressed working fluid into the hermetic case, the electric motor has a rotor which rotates with the rotary shaft and a stator which surrounds the outer periphery of the rotor, a discharge flow channel which extends in the up-and-down direction and leads the working fluid discharged from the insides of the cylinder chambers (20a, 20b) to a side of the discharge pipe is formed in the electric motor, and when the rotary compressor is in use, it is suitable for that the maximum discharge pressure of the working fluid becomes three or more MPa, wherein the rotary compressor is characterized in that the electric motor has six or more poles, and the following relational expressions to are satisfied, where an inner diameter of the cylinder chambers (20a, 20b) is D1, the sum of heights of the cylinder chambers (20a, 20b) of the two cylinders (16a, 16b) in the up-and-down direction is H, a distance from an upper end portion of the stator to an inner wall surface of an upper portion of the hermetic case in the up-and-down direction is L1, a sectional area of an inner side space portion of the hermetic case in a plane perpendicular to the up-and-down direction is Ac, a total sectional area of the discharge flow channel in a plane perpendicular to the up-and-down direction is Ad and a thickness of a stator core of the stator in the up-and-down direction is T: 0.85 × D 1 < H < L 1 0.06 < Ad / Ac < 0.13 1.2 < T / H < 1.5