Radiofrequency ablation electrode assembly

The invention provides a radiofrequency ablation electrode assembly. The radiofrequency ablation electrode assembly comprises a handle, a sleeve pipe and a central electrode guide wire, wherein the sleeve pipe and the central electrode guide wire are arranged at one end of the handle and are connected with the handle, at least one slide lantern ring is arranged on the central electrode guide wire, and each slide lantern ring is connected to at least one electrode guide wire; the far end of the central electrode guide wire is connected to the far end, relative to the handle, of the electrode guide wire; part of the central electrode guide wire is sleeved with the sleeve pipe, by pushing and pulling the sleeve pipe or the central electrode guide wire, each slide lantern ring is capable of sliding in the axial direction of the central electrode guide wire, and thus the position and shape of the electrode guide wire are changed. In this way, the electrode guide wire is capable of adapting to different cavities, the electrode guide wire can conveniently enter a diseased region, the area of radiofrequency ablation is adjusted according to the tumor size and the environment of the cavity, and thus the operation effect is improved.