The invention discloses an inductor and a manufacturing method thereof. The inductor comprises a magnetic core and a conductor, the middle part of the conductor is arranged in the magnetic core, two ends of the conductor are exposed outside the magnetic core, the middle part of the conductor is thicker than the two ends of the conductor, and / or the middle part of the conductor is wider than the two ends of the conductor to reduce the direct-current resistance of the inductor. The manufacturing method comprises the following steps of A, manufacturing the conductor, B, putting the conductor into magnetic powder, and pressing to form an inductor semi-finished product, C, sintering, annealing and curing the inductor semi-finished product, and D, processing the two ends of the conductor, removing redundant parts, and bending the two ends of the conductor. According to the inductor, the middle part of the conductor is thickened and / or widened, so that the direct-current resistance of the inductor can be effectively reduced. In the inductor manufacturing method, through a sintering annealing process, the inductance value of the inductor can be improved, the size of the inductor can be reduced, the loss and heating of the inductor under high-frequency use can be reduced, and the efficiency of the inductor can be improved.