To　address　the　issues　that　the　existing　excavator　component　parameter　optimization　design　could　not　ensure　optimal　performance　across　various　positions　and　conditions　throughout　the　excavation　operations,　and　did　not　consider　the　energy　consumption　characteristics　of　the　operational　processes,　a　new　multi-objective　optimization　design　method　of　excavator　work　device　parameters　with　the　target　of　the　power　and　energy　consumption　characteristics　of　the　whole　typical　working　condition　operational　processes　was　studied.　Through　the　dynamics　simulation　of　the　ADAMS-based　parametric　excavator　virtual　prototype,　the　drive　force　and　power　characteristics　of　the　hydraulic　cylinders　in　four　typical　operating　conditions　were　analyzed,　the　optimization　conditions　of　work　devices　were　determined,　and　a　new　multi-objective　optimization　model　was　established　which　considering　the　drive　force　transmission　ratio　and　power　characteristics　of　the　hydraulic　cylinders　in　the　typical　operating　conditions.　The　parameters　of　the　bucket,　stick　and　boom　were　optimized　in　a　sequential　multi-objective　process　in　combination　with　the　parametric　virtual　prototype　of　a　complete　excavator　work　device.　The　optimization　results　demonstrate　the　effectiveness　of　the　new　multi-objective　optimization　method　by　improving　the　performance　of　the　work　device　in　transmitting　power　during　excavator　operations　while　reducing　the　energy　consumption　of　the　hydraulic　cylinders.　©　2025　Chinese　Mechanical　Engineering　Society.　All　rights　reserved.