This plan is managed for developing business plan of dog food online shop. Now most of people love to have dogs as friends and take good care of them by using dog food which is convenient to feed. Trend of dog food business grow up and it’s good opportunity for doing this business. Besides it’s possible for doing E-commerce of this product. Due to studying and searching, I collect primary data from doing questionnaires for surveying consumer’s need in buying dog food through internet. Moreover,I study secondary data from academic articles of internet and competitors’ websites for assessing outside environment such as analysis of internet technology ,economic ,industry ,competitors and consumers for bringing the data to apply in marketing , process and monetary plan correctly The target is group of consumers who need high quality dog food nutrition for healthy dogs So the marketing plan is to present high quality product with quick service for marketing promotion will aim to public relation on internet. From finance assessment is found that this project can refund the capital within 2 years 7 month payback period with 1,896,288 Bath Net Present Value with a 51% internal rate of return. This Project investment 743,260 Bath