An electromagnetic valve used for a CDC shock absorber comprises a valve body vertically arranged, an electromagnetic coil, a valve element, a limiting nut, a compression spring and a seal cover; a vertical blind hole is formed in the upper portion of the valve body, multiple valve holes arranged in a radiation spaced manner are formed in the side wall of the valve body, the inner ends of the valve holes are communicated with the middle of the blind hole, the outer wall of the lower portion of a compression spring is sunk to form an annular groove, the electromagnetic coil is arranged in the annular groove in a surrounding manner, the valve element can be arranged in the blind hole in a vertical sliding manner, a shaft hole coaxial with the blind hole is formed in the valve element, communication holes in one-to-one corresponding to the valve holes are formed in the side wall of the valve element, the inner ends of the communication holes are communicated with the shaft hole, a vertical spring limiting hole is formed in the bottom end of the valve element, the limiting nut is used for limiting the valve element in the blind hole and is fixed to the blind hole and located above the valve element, the compression spring is arranged at the bottom of the blind hole vertically, and the top of the compression spring abuts against the bottom of the spring limiting hole; the seal cover is fixedly buckled on the lower of the valve body upwards, and the seal cover seals the electromagnetic coil in the annular groove.