This　paper　introduces　a　portable　programmable　transcutaneous　vagus　nerve　stimulator,　which　provides　bipolar　pulse　stimulation　current　output.　The　stimulator　powered　by　mobile　can　work　normally　under　the　control　of　mobile　application.　It　has　the　features　of　flexible　and　adjustable　stimulus　parameters,　low　power　consumption　and　small　size.　Based　on　MCU　C8051F330　as　the　controller,　the　percutaneous　vagus　nerve　stimulator　uses　Bluetooth　wireless　communication　technology　to　communicate　with　smart　phones,　providing　waveform　output　with　current　strength　of　0-12mA　and　frequency　of　1Hz-100Hz.　Experiments　show　that　the　percutaneous　vagus　stimulator　can　work　normally　under　the　control　of　mobile　phone.