Big data has become a very popular topic in the current social, which value is widely accepted in all walks of life. Big data era has arrived, and telecom operators also ushered in the big opportunity of big data. This paper analyzes the value of big data and its existing challenges from the angle of operators, studies on the big data business model combining with the demand of market and industry. It puts forward four kinds of external operation business model starting from the point of "cluster data service", and proposes some constructive suggestions for big data information security problems.