Zhanjiang and Shantou are big agricultural cities and important development poles of the East and West of the Guangdong Coastal Economic Belt. It is of great practical significance to quantitatively study the formation degree of development poles in economically underdeveloped regions. Taking Zhanjiang as an example, this paper constructs the development pole and measures the index by integrating 9 indicators, and analyzes the history and current situation of Zhanjiang as the development pole. It turns out that in the neighboring area, Zhanjiang has the ability to become a development pole, but it is far from being formed, and must cooperate with Haikou to form the dual development pole model. According to the analysis results, the corresponding suggestions are given in industry, ecology, transportation, talents, technological innovation and financial investment.