An electric oil pump comprising: a rotor driven to rotate by a motor; and a pump body having: a pump chamber accommodating the rotor; an intake port for introducing oil into the pump chamber according to rotation of the rotor; a discharge port for discharging oil from the pump chamber according to rotation of the rotor; a first discharge passage communicated to a first communication hole provided in the discharge port and circulating oil discharged from the discharge port, the first discharge passage having a smaller cross sectional area than the discharge port; and a second discharge passage communicated to a second communication hole provided in the discharge port separately from the first communication hole and circulating oil discharged from the discharge port, the second discharge passage having a smaller cross sectional area than the discharge port; characterized in that a first check valve opened/closed according to a pressure of oil discharged from the discharge port is provided in the first discharge passage, and a second check valve opened/closed according to a pressure of oil discharged from the discharge port is provided in the second discharge passage; and the second discharge passage includes, downstream the second check valve, an orifice for distributing an amount of flow to the first discharge passage and an amount of flow to the second discharge passage. a rotor driven to rotate by a motor; and a pump body having: a pump chamber accommodating the rotor; an intake port for introducing oil into the pump chamber according to rotation of the rotor; a discharge port for discharging oil from the pump chamber according to rotation of the rotor; a first discharge passage communicated to a first communication hole provided in the discharge port and circulating oil discharged from the discharge port, the first discharge passage having a smaller cross sectional area than the discharge port; and a second discharge passage communicated to a second communication hole provided in the discharge port separately from the first communication hole and circulating oil discharged from the discharge port, the second discharge passage having a smaller cross sectional area than the discharge port; a pump chamber accommodating the rotor; an intake port for introducing oil into the pump chamber according to rotation of the rotor; a discharge port for discharging oil from the pump chamber according to rotation of the rotor; a first discharge passage communicated to a first communication hole provided in the discharge port and circulating oil discharged from the discharge port, the first discharge passage having a smaller cross sectional area than the discharge port; and a second discharge passage communicated to a second communication hole provided in the discharge port separately from the first communication hole and circulating oil discharged from the discharge port, the second discharge passage having a smaller cross sectional area than the discharge port; characterized in that a first check valve opened/closed according to a pressure of oil discharged from the discharge port is provided in the first discharge passage, and a second check valve opened/closed according to a pressure of oil discharged from the discharge port is provided in the second discharge passage; and the second discharge passage includes, downstream the second check valve, an orifice for distributing an amount of flow to the first discharge passage and an amount of flow to the second discharge passage.