Soft Magnetic Composite is a kind of new soft magnetic material. High-purity iron powder is used as main material and insulation treatment is conducted on powder particle surface. Then powder metallurgy technology is applied for compression molding. After that, the material undergoes heat treatment. With relatively low high-frequency eddy current loss, relative high saturation induction density, the product may be processed to be complex 3D structure product. With SMC iron core, it has the advantage of small motor, reduced power consumption, economized wire rod and simple assembly.