The invention belongs to a vacuum chamber vessel wall processing device of a nuclear fusion device, and particularly relates to a movable radio frequency glow electrode of a nuclear fusion device. The movable radio frequency glow electrode comprises a spiral radio frequency electrode and a telescopic drive mechanism, wherein the telescopic drive mechanism is provided with the spiral radio frequency electrode. The movable radio frequency glow electrode has the advantages that the radio frequency electrode is driven by a V-shaped bellows movement mechanism, so the position of the electrode can be quickly and conveniently adjusted according to an experimental requirement. The spiral electrode works under the action of a high-frequency alternating electric field, so the probability that electrons collide with gas molecules is increased, and the removal efficiency of impurities in low mass number on a vacuum chamber vessel surface is higher. The electrode is cooled through a water cooling structure, so that the probability that the electrode deforms after being used for a long time is reduced, and the operation safety of a system is improved.