The invention relates to an electric motor, comprising a rotor fixed to a rotating shaft; a first end frame and a second end frame, supporting the rotating shaft; a stator core disposed at the outer periphery side of the rotor and a stator winding coiling around the stator core. The electric motor also includes a terminal inserting hole formed in the second end frame, a coil terminal which extendsfrom the stator winding along a direction facing towards the second end frame and inserts into the terminal inserting hole, and a cord ring. The cord ring comprises a body part and a flange part. Themain body of the cord ring is provided with a terminal maintaining hole. The cord ring is inserted in the terminal inserting hole of the rear end frame, and the flange part contacts with the rear-side axial end surface of the second end frame (i.e. the peripheral part of the rear-side opening end part of the terminal inserting hole). Through inserting the cord ring from the rear-side opening endinto the terminal inserting hole, the cord ring is assembled in the second end frame. The invention also relates to a manufacturing method of the electric motor.