To provide an artificial nail structure allowing a user to easily change an ornament by one hand without using a tool and allowing more artificial nail users to enjoy three-dimensional nail decoration.

A socket-shaped locking hole 3, a socket side member of a snap fastener 6, is formed on the artificial nail 1, and a ball side member 5 of the snap fastener 6 is attached to the ornament 4. The artificial nail 1 is bonded or pasted to a natural nail 11 of the artificial nail user, and the ornament 4 is attached to the artificial nail 1 by detachably locking the ball side member 5 with the socket-shaped locking hole 3.