A joint finger ring, comprising a ring setting, inlays and connection components, wherein the inlays are arranged in the ring setting through inlay wrapping materials, and the left end and the right end of the ring setting are movably connected through the connection components; the ring setting is similar to a watchband and can be bent, disassembled and assembled, and is composed of ring setting components, C-shaped pins and C-shaped pipes or fixed caps and fixed pins; the ring setting components are made of an integral module and precious metals comprising platinum, gold and silver or made of an integral module and ordinary metal, wherein the connection component is composed of a module A and a module B to form movable connection; the module B comprises a second magnetic stone or magnet, a second joint bayonet, a second ring setting joint and a fixed notch; the module A comprises a lock switch button, a return spring, first joint bayonets, a fixed bulge, a first magnetic stone or magnet and a first ring setting joint, the first ring setting joint is connected with the module A and one end of the ring setting through an earplug or the fixed caps and fixed pins; or the module A comprises a lock switch button, a return magnet, a return magnet, first joint bayonets, a fixed bulge, a first magnetic stone or magnet and a first ring setting joint, the first ring setting joint is composed of the earplug or the fixed pins and the fixed caps to connect the module A and one end of the ring setting; and the second ring setting joint is located on the left side and the right side of the lower end of the module B, and connected with the module B and the other end of the ring setting through the earplug, or the fixed caps and fixed pins, wherein the second ring setting joint is composed of the earplug, or the fixed caps and fixed pins. the ring setting is similar to a watchband and can be bent, disassembled and assembled, and is composed of ring setting components, C-shaped pins and C-shaped pipes or fixed caps and fixed pins; the ring setting components are made of an integral module and precious metals comprising platinum, gold and silver or made of an integral module and ordinary metal, wherein the connection component is composed of a module A and a module B to form movable connection; the module B comprises a second magnetic stone or magnet, a second joint bayonet, a second ring setting joint and a fixed notch; the module A comprises a lock switch button, a return spring, first joint bayonets, a fixed bulge, a first magnetic stone or magnet and a first ring setting joint, the first ring setting joint is connected with the module A and one end of the ring setting through an earplug or the fixed caps and fixed pins; or the module A comprises a lock switch button, a return magnet, a return magnet, first joint bayonets, a fixed bulge, a first magnetic stone or magnet and a first ring setting joint, the first ring setting joint is composed of the earplug or the fixed pins and the fixed caps to connect the module A and one end of the ring setting; and the second ring setting joint is located on the left side and the right side of the lower end of the module B, and connected with the module B and the other end of the ring setting through the earplug, or the fixed caps and fixed pins, wherein the second ring setting joint is composed of the earplug, or the fixed caps and fixed pins.