The present invention discloses a punching device having a filtering function, which comprises a device end of a punching machine, a water tank and a filter portion. One end of the water tank is connected to the end of the punching machine. The filter portion has a filter material and is disposed at the other end of the water tank. Thereby, the water in the water tank will pass through the filter material of the filter material portion, thereby releasing a large amount of antibacterial ions to improve the problem of easy mold growth.本創作係揭露一種具有過濾功能之沖牙裝置，係包含沖牙機裝置端、水箱及濾材部。水箱之一端連結沖牙機裝置端。濾材部具有濾材且設於水箱之另一端。藉此，水箱內的水將會經過濾材部之濾材，進而釋放出大量抗菌離子，以改善容易滋生黴菌之問題。
