The active distribution network demands advanced control model to manage network. This paper begins with an introduction to the development requirements of ancillary services in distribution networks under an electricity market environment, and then different control models with diverse ancillary services at home and abroad are compared. Based on that, an active control model with ancillary services sharing mechanism is proposed. Both sides of the global and local optimization are considered under the condition of minimal information exchange, meanwhile, the adjustable loads are dispatched to provide ancillary services in a structure of three layers. At last, the efficiency of the model is evaluated by the fluctuation variance of power. Simulation results show that the proposed control model integrates ancillary resources fully and reduces power fluctuations availably in normal or abnormal circumstances. This work is supported by National Natural Science Foundation of China (No. 51541707) and National Basic Research Program of China (973 Program) (No. 2013CB228205).