The present invention discloses a plasma air purifying device and an air purifying device thereof, which are a purifying effect of opening or closing a space by generating plasma, catalyst reaction, deodorizing, sterilizing, anti-virus and removing pollutants in the air. The plasma air purifying device and the air purifying device prepared by the device mainly include a dust collecting device, a blower, a closed air passage, and at least one ion generating device; thereby, the present invention mainly uses an electrode The hard plasma design of the plasma plasma is effective in destroying bacteria and volatile organic compounds in the air, and filtering the pollutants in the air by the physical principles of a plurality of filters, and indeed achieves decontamination, deodorization, sterilization, And major advantages such as anti-virus.本創作揭露一種等離子空氣淨化裝置及其空氣淨化設備,係為一種藉由產生等離子、觸媒反應、除臭、殺菌、抗病毒與去除空氣中之汙染物,達到開放或封閉空間之淨化效果的等離子空氣淨化裝置與以此裝置製備之空氣淨化設備,本創作主要係包括有一集塵菌裝置、一鼓風機、一封閉風道,以及至少一離子產生裝置;藉此,本創作主要係藉由電極製作出等離子之電漿的硬體設計,有效破壞空氣中的細菌與揮發性有機化合物,並藉由複數個濾網之物理原理過濾空氣中之汙染物,確實達到去汙、除臭、殺菌,以及抗病毒等主要優勢。