The invention discloses an environmental economic dispatching method considering polluted gas emission risk. The method comprises the steps of defining polluted gas emission risk evaluation indexes in environmental economic dispatching after considering the randomness of wind power output; building the polluted gas emission risk evaluation indexes according to the concept of semi-absolute deviation risk; building a multi-target random dynamic environmental economic dispatching model considering the polluted gas emission risk in daily dispatching cycle according to the multi-scene modeling theory. According to the method, the wind power output scene simulation and the scene reduction technology are combined; the built model is solved by the genetic algorithm that the embedded target is relatively dominant; therefore, the risk information of polluted gas emission in the environmental economic dispatching can be effectively evaluated, and the polluted gas emission risk can be effectively managed.