The invention discloses a radio frequency identification (RFID) flexible bending type adjustable antenna. The RFID flexible bending type adjustable antenna comprises a first antenna, a second antenna and an antenna structure adjustment element, wherein the antenna structure adjustment element is movably connected between the first antenna and the second antenna and comprises a structure deformation module and an automatic tuning module, the structure deformation module is in communication connection with the first antenna and the second antenna separately, and the automatic tuning module is in communication connection with the structure deformation module. By the RFID flexible bending type adjustable antenna, the adaptability and the installation convenience of a single antenna in different application links can be greatly improved; the problem that a tool of a robot structure is required to be designed repeatedly is solved, and the antenna can be applicable to manual grapping of a robot; the problem that a large amount of antenna verification work is required when distance is changed is solved, and the antenna angle and combination can be directly configured by an adjustable module; and the cost problem is solved, the structure adjustment module and the automatic tuning module both belong to miniature and simple devices, a customized structural member at a large scale is prevented, and the addition of an air cylinder and a tool fixture is prevented.