The invention discloses an electric car permanent magnet synchronous motor command filtering fuzzy control method taking iron loss into account. According to the fuzzy control method, a command filtering technology is introduced in a traditional back-stepping design method, error caused by filtering is reduced by introduction of compensation signals, and a problem of 'calculation explosion' caused by continuous derivation in the traditional back-stepping control is overcome successfully. In the control method provided by the invention, a fuzzy logic system is used for approaching a nonlinear function in the system, a command filtering back-stepping technology and a fuzzy self-adaptive method are combined together to form a fuzzy self-adaptive speed controller; after being regulated by the control method provided by the invention, a motor can quickly run in a steady state, and the control method is more suitable for a control object needing fast dynamic response, such as an electric car drive system; simulation result shows that, with the control method provided by the invention, influence caused by inaccuracy of parameters can be overcome, ideal control effect is guaranteed beneficially, and fast and steady response to revolving speed is realized.