In today's progressive era of mobile technology, the number of smartphone and tablet ownership continues to rise. In addition, Thai people have been increasingly concerned about their health and expectations in consumption . Therefore, this study's purpose is to create a web application about e-Community Supported Agriculture (e-CSA) system that is conducted by software development life cycle method. The survey is conducted by focusing on the influence of local agricultural products e-commerce via the web application development. The target participants are farmers and customers in Chiang Rai province, Thailand. The results indicated that the e-commerce application benefits both farmers and customers. Using the application, the farmers get opportunities to increase sales, networking, sale price, and greater control of transportation. For customers, they can get opportunities to receive fresh organic and healthy products, pay a fair price, and request rare products. The findings suggest that the web application promotes the economy in the local area for expansion since the export logistics are more convenient for small agricultural businesses.