Order picking system and method

The invention provides an order picking system and method, and the system comprises a warehouse order management system which receives the order information transmitted by an order system, and converts the order information into the position information of an order bank and the task information of the order bank; a trolley management scheduling system used for receiving the order row position information sent by the warehouse order management system, carrying out priority ranking on goods picking, determining an optimal driving route according to a priority ranking result and sending a departure instruction; an order picking trolley used for receiving the optimal driving route and the departure instruction and advancing according to the optimal driving route according to the departure instruction; a vehicle-mounted system used for receiving order bank task information; and a handheld terminal used for receiving the order bank task information and displaying the order bank task information. According to the in