The embodiment of the invention discloses a finger ring. Through detachability between a ring body and an inlaying opening in the finger ring, separate decorative effects of the ring body and the inlaying opening are achieved; different ring bodies and different inlaying openings are combined so as to meet corresponding preferences of users and using needs on different occasions. The finger ring comprises a at least one ring body and an inlaying opening, wherein an ornament is inlaid into the upper part of the inlaying opening; an openable and closable buckle body structure is arranged at the bottom of the inlaying opening; the buckling length of the openable and closable buckle body structure is equal to the total width of the at least one ring body; a positioning slot is formed in the inner surface of the at least one ring body; two buckling symmetrical surfaces of the positioning slot form an open structure; the inlaying opening is movably connected to the at least one ring body through the openable and closable buckle body structure and the positioning slot.