The utility model relates to an electric artificial intelligent car star type communications network system based on on -vehicle ethernet. This system includes: intelligent decision and the control unit (11): be formed by connecting through the ethernet annular a plurality of controllers for on -vehicle electronic equipment's centralized control, the on -vehicle electronic equipment communication unit of star type: including a plurality of on -vehicle electronic equipment and an outside ethernet switch, a plurality of on -vehicle electronic equipment all be connected to outside ethernet switch, this outside ethernet switch is connected to a controller in intelligent decision and the control unit (11), the on -vehicle electronic equipment communication unit of star type is equipped with a plurality ofly and is less than the controller number, and the on -vehicle electronic equipment communication unit of each star type corresponds a controller being connected to in intelligent decision and the control unit (11) respectively, and the controller that is not used for connecting the on -vehicle electronic equipment communication unit of star type is the redundant control ware. Compared with the prior art, the utility model has the advantages of communication is simple and convenient, stability is strong and the expansibility is high.