Abstract: With the advent of 3G era,for the realization of effective support for customer service to further enhance the user perception,Yunnan Unicom propozed a new MR positioning algorithm,and based on the algorithm developed the customer service support system.The customer support system not only can automatically analyze the network complaints and make a uniform interpretation of the complaints,but also can automatically locate the user complaint location and made complaints closed-loop processing.Therefore,to effectively enhance the user perception,it established a good brand image of China Unicom.