Based on the research of the two group of relationship between big data and small data, big data analysis and small data analysis, and made the point that the telecom enterprise should take advantage of its own small data based on its business problem, the analysis and application development strategy of telecom enterprise big data was proposed. The telecom enterprise should select, capture and store the useful big data, combine it with the small data, then mine the value of the data, which is becoming more comprehensive, granular and perfect because of being combined. The strategy can support telecom enterprise to realize the enterprise real-time marketing, accurate marketing, smart pipeline operation and customer experience management.