Inwheel motor drive technology represents an essential development direction in new energy vehicle drive system. The technical requirements and drive form were introduced. The technical requirements and drive form of inwheel motor drive were summarized. Current research situation of inwheel motor drive technology was compared and analyzed briefly. The key technique problems of inwheel motor technology were proposed. The essential technologies in descreasing unsprung mass

restraining vertical vibration effect and reducing torque ripple of inwheel motor were discussed

which were supposed to be solved urgently. The development trend of inwheel motor drive technology was predicted.