The　anti-lock　brake　system　(ABS)　based　on　the　conventional　solenoid　valve　and　hydraulic　brakes　in　car　agencies　existed　shiver　during　the　breaking　processing.　Brake　friction　block　and　brake　disc　friction　led　to　a　sharp　temperature　rising　and　resulted　in　some　brake　lag　phenomenon.　In　this　paper,　it　has　been　proposed　and　developed　an　auto　ABS　brake　based　on　electrorheological　(ER)　effect.　The　result　shows　that　brake　effect　based　on　ER　is　superior　to　solenoid　valve　and　hydraulic　brake,　and　also　it　can　be　achieved　an　automobile　anti-lock　braking　processing　by　adjusting　voltage.