Chengxian model is a continuous process and a benign e-commerce ecology that keeps pace with the times. The case of "Chengxian Model: A Walnut Triggers E-commerce Poverty Alleviation" won the second prize of the National E-commerce Hundred Cases. It has promoted the change of farmers' thinking of starting a business and getting rich, stimulated the endogenous development momentum of the poor, forced the adjustment of agricultural industrial structure and the improvement of rural infrastructure, and embarked on a new way of e-commerce to help the poor, forming a' county-level model', which was called one of the county-level e-commerce development models by the industry.