The utility model discloses a magnetic exchange valve, including taking the valve body of cavity, set up the electro -magnet in the cavity of valve body, the cavity both ends of valve body are respectively with upper cover plate and valve seat seal, the disk seat on set up import and export, the cavity in the disk seat communicates with each other with import and export upper cover plate and electro -magnet between set up the pressure compensation pole, outside the through -hole of upper cover plate is stretched out to the one end of pressure compensation pole, the spacing space between upper cover plate and electro -magnet of the other end, the case sets up in the valve body and disk seat cavity of electro -magnet lower part. The utility model discloses a magnetic exchange valve sets up pressure compensation pole and case respectively through the both ends at the electro -magnet, because the pressure compensation pole communicates with each other with external environment respectively with the case, can transmit external environment pressure to the both ends of electro -magnet respectively, and the mode of offsetting through both ends pressure realizes having solved the pressure compensation problem to " the hard compensation " of deep water pressure.