This research is concerned on the study of Management of Business Plan Writing for Entrepreneur in Organic Agriculture Products: A Study of SUAN-PAH-NAKORN-DHAMMA. The research aims to study management process in writing a business plan, the business plan writing and business guidelines for the entrepreneur by using qualitative research with in-depth interview methods through the entrepreneur, academics specializing in management and business plan writing and finance and investment specialist. This research found that management process for writing a business plan are planning, organizing, leading and controlling. Moreover, from writing a business plan, the business has a net profit of 367,650 baht. However, business guidelines for the entrepreneur are knowledge and expertise in organic farming of the entrepreneur, using innovation and local wisdom to create a value added, cost consideration and investments required in the business and there should be contingency reserves for using in the business. Keywords: Management, Business plan writing