A kind of midfrequent AC negative potential cosmetic massage instrument,Comprising: a negative potential shortwave generator,One VR controller and a microcomputer controller； Wherein the output end row of VR controller system and negative potential shortwave generator is electrically connected,It uses and adjusts its voltage swing； And microcomputer controller is then electrically connected the output end of VR controller,It uses and amplifies the signal of gained,And it is then equipped with one group of electrode in microcomputer controller output end,It is again equipped with primary Ioops detecting unit between microcomputer controller and electrode； When electrode output being enabled to have load,Circuit detecting unit system can notify negative potential shortwave generator,Make negative potential shortwave generator that can adopt progressive manner and improve voltage automatically,It uses and provides safety and comfortable electrotherapeutic effect.一種中頻交流負電位美容按摩儀器，其包括：一負電位短波產生器、一VR控制器及一微電腦控制器；其中VR控制器係與負電位短波產生器之輸出端行電性連接，藉以調整其電壓大小；而微電腦控制器則電性連接VR控制器的輸出端，藉以將所得之訊號放大，且在微電腦控制器輸出端則設有一組電極，又微電腦控制器及電極間係設有一迴路偵測單元；令電極輸出有負載時，迴路偵測單元係可通知負電位短波產生器，使負電位短波產生器可採漸進的方式自動提高電壓，藉以提供安全又舒適之電療效果。
