This　paper　presents　a　collaborative　control　system　for　an　electric　vehicle　chassis　based　on　a　centralized　and　hierarchical　control　architecture.　The　centralized　controller　was　designed　for　the　suspension　and　steering　system,　which　is　used　for　improving　ride　comfort　and　handling　stability;　the　hierarchical　controller　was　designed　for　the　braking　system,　which　is　used　for　distributing　the　proportion　of　hydraulic　braking　and　regenerative　braking　to　improve　braking　performance.　These　two　sub-controllers　function　at　the　same　level　of　the　vehicle　chassis　control　system.　In　order　to　reduce　the　potential　conflict　between　the　two　sub-controllers　and　realize　a　coordination　optimization　of　electric　vehicle　performance,　a　collaborative　controller　was　built,　which　serves　as　the　upper　controller　to　carry　out　an　overall　coordination　analysis　according　to　vehicle　signals　and　revises　the　decisions　of　sub-controllers.　A　simulation　experiment　was　carried　out　with　the　MATLAB/Simulink　software.　The　simulation　results　show　that　the　proposed　collaborative　control　system　can　achieve　an　optimized　vehicle　handling　stability　and　braking　safety.