Abstract: This paper studies the competitiveness of potato industry in prefectures and cities of Yunnan Province, and compares the advantages of regional potato industry competitiveness, and finds out the problems. This is helpful to extend the potato industry chain and optimize the comprehensive arrangement of the region industry. The data of indexes about potato production, processing, market, scientific research and government policy support of 15 prefectures and cities of Yunnan Province are collected and analyzed. The synthesis weight is calculated by ahp and entropy weight method. According to the weight of each index, the regional index score is calculated, the order of regional potato production competitiveness, processing competitiveness, market competitiveness, scientific research competitiveness, policy support and comprehensive competitiveness are obtained. The results show that the research and development of potato seeds which are adapted to plateau area, the protection of farming land, the processing of diversified products, the creation of plateau characteristic potato brand, and the expansion of sales channels are conducive to promoting the strategy of potato as staple food.