Taiwan¡¦s mango peasants and industries can gain from trade, especially by exporting high-quality mangos to high-income countries of the world ( like Japan ). But there are still some Taiwanese mango peasants who suffer from low bargaining power in a nearly perfectly competitive market and the downward trend of market prices. By interviewing peasants and middlemen about marketing channels of mangos of Yujing Township in Tainan County, I found the following aspects as crucial for a high-profit marketing of mango: agricultural technology, grading and packaging, quality control and logistical conditions as well as a better interaction between peasants, farmers¡¦ associations, enterprises and governmental institutions. Thus, I consider using markets segmentation as a good strategy in order to increase the competitiveness of agricultural products and lower nontariff trade barriers, therefore help raising peasants¡¦ bargaining power and solute the problem of downward trend of market prices. Markets segmentation is a term used in order to describe the segmentation of agricultural products according to their characteristics. The four aspects mentioned above make the markets segmentation efficient. Good interactions between peasants, farmers¡¦ associations, enterprises and governmental institutions can facilitate the operation in the marketing system and thus increase the value of agricultural products. This study also inspires China¡¦s peasants as well as makes China government the scholar who research problems about agriculture, rural areas and peasantry understand the problems of Mainland China¡¦s agricultural products marketing.