A cover restricting mechanism (8) is adapted for use in a foldable electronic device (9). The foldable electronic device includes a cover (10). The cover restricting mechanism includes a follower (31), a housing (20), and a restricting mechanism (32). The follower is provided at one end of the cover. The housing has a cavity (21). The restricting mechanism is provided in the cavity of the housing, and when the cover is rotated to an open position, the follower rotates with the cover, and the restricting mechanism retards/slows the progress of the follower, thereby helping the cover to come more gently to a full, open position.