The study of “Spatial Pattern of Potato Production Process in Chiang Mai – Lamphun Province” has 3 objectives 1) to study Spatial Pattern of Potato Production Process in Chiang Mai – Lamphun Province and 2) to study Factors that influence the decision to planting potatoes of farmers in San Sai district. Theoretical concepts used in the study consisted of Network concept in the agri-food system ,The concept of the production process of goods to trade and The transport network concept. Data used in this study were satellite images , Field Survey, Interviews and factors collected by questionnaires from 62 samples. For analysis with descriptive Analysis by priority.