Base situation of Nanchang metro line 1 vehicles was introduced. The vehicle dynamic performance and the traction & braking characteristics were calculated and simulated, as well as the rescue capability and power consumption. The calculation and simulation results showed that the performance of electric drive system met the design requirements. The Nanchang metro line 1 vehicles and their electric drive systems have passed the field type test and running inspection, and now are operating with passengers, which show a good performance.