The utility model provides a proper motion magnetism actuation safety protective fence is equipped with magnetism respectively in rail both sides and inhales and connect first and magnetism and inhale connector no. 2, and the magnetism of arbitrary rail is inhaled and is connected magnetism first and adjacent rail and inhale two coupled linking of connector, and the rail bottom is equipped with the universal wheel, fixes with the hasp between the adjacent rail. Inhale the connector and make rail automatic actuation fast through set up magnetism in rail both sides, and the magnetism connection face design forming coupling locking of inhaling the connector, guarantee stably after the actuation firmly to be difficult for droing, the folded cascade universal wheel makes things convenient for the rail to remove with fixed, and the hasp prevents as the protection of rail connection that the rail from disintegrating because of the striking, makes the rail more firm. Safety protective fence simple structure, convenient operation has improved work efficiency, has reduced intensity of labour, has guaranteed fail safe nature simultaneously.