This　article　presents　a　high-voltage　Tolerant　and　current-accurate　neural　stimulator　using　smic18　technology　and　3.3V　deep　N-well　technology.　The　circuit　is　designed　with　adaptive　bias　circuit　design,　and　the　high　voltage　tolerance　of　6　×　VDD　is　realized　by　transistor　stack　technology,　which　prevents　the　voltage　overload　and　gate　oxide　reliability　of　low　voltage　transistors.　When　the　DC　input　voltage　is　3.3V,　the　stimulator　can　withstand　a　maximum　working　voltage　of　19.8V.　The　chip　can　generate　adjustable　input　stimulation　current　to　match　different　electrode　models,　with　an　output　current　range　of　0-1mA.　The　mismatch　of　the　biphasic　stimulation　output　current　of　the　stimulator　is　relatively　small,　with　a　mismatch　of　0.225　n　A　at　100　u　A　and　2.845nA　at　600uA.　©　2024　IEEE.