The invention provides a motor rotor and an electromotor with the same. According to the motor rotor, the distance between two terminals on the side far from the center of an iron core of a permanent magnet is taken as the length L of the permanent magnet, the distance between the connection line of the two terminals on the side far from the center of the iron core of the permanent magnet and themiddle point on the side close to the center of the iron core of the permanent magnet is taken as the width H of the permanent magnet, and H/L is more than or equal to 1/10. The electromotor comprises the motor rotor. By adjusting the relation between the length L and the width H of the permanent magnet, the air-gap induction of the permanent magnet can be effectively increased, that is, the permanent magnetic flux of the rotor in d-axis and q-axis directions is effectively increased, so that the permanent magnet utilization rate and the motor rotor performance are improved on the premise of not increasing the use amount of the permanent magnet.