A magnetic coupling device includes a first seat, a second seat, a magnetic unit and a releasing member. The second seat is connected to the first seat. The magnetic unit includes a first member disposed in the first seat, and a second member disposed in the second seat. The releasing member is connected to the first seat and the second seat, and is convertible between a linked position, where the second seat is proximate to the first seat, and the second member is magnetically connected to the first member, and a released position, where the second seat is away from the first seat, and the second member is separated from the first member.