With the rapid development of "Internet +", Internet marketing has greatly broadened the sales market of agricultural products. The thesis analyzes the three model of web marketing about agricultural products briefly by looking up for relevant information and data. Through analysis of the current situation of web marketing of agricultural products in Henan province, the key factors in the web marketing of agricultural products are: logistics cycle, website content, brand awareness, individual needs, using the analytic hierarchy process to solve the problem of the best choice of the web marketing model: Internet marketing model based on e-commerce platform. Finally, from the five aspects of standardization of agricultural products, brand building, network facilities construction, logistics system construction, personnel training and other aspects, based on the existing problems in developing web marketing putting forward to the suggestion of promoting the web marketing of Henan agricultural product.