The invention discloses a dispatching method used for high speed upstream packet access and a system thereof. A first class dispatching, when a district is over-loaded and launching conditions are met, is used for determining UE required to launch non-service RG DOWN and sending information to a second class dispatcher, carrying out priority calculation and sorting to service UE, distributing the upstream load used for E-DCH between the service UE, determining target noise uplift resource to be distributed to each service UE, and sending information to a second class dispatcher. The second class dispatching, when non-service UE needs to launch RG DOWN, launches RG DOWN, estimates signal channel quality after the dispatching authorization comes into effect according to current information of the service UE and historical information, determines the specific authorization required to give to the service UE according to the target noise uplift distributed to the service UE, determines the authorization order demanded to launch, and launches dispatching order to the service UE. The dispatching method of the invention reduces complexity dispatcher and improves implementation efficiency of a dispatcher.