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 . <EOS>