The rapid growth of information technology covers all aspects of human life. Starting with the trend of social media which in the last 5 years has grown very rapidly. With these developments, information technology is no longer only a facility for talking between users, but also as a tool to expand the business scope of business executives. One of these companies, namely CV Sehat Sejahtera 69, is one of the producers of high pH drinking water in Indonesia. To be able to compete nationally, we need equipment or tools that can reach the expected market, in this case an information system is needed to support product sales activities to be more effective and efficient. The Sales Information System at CV Sehat Sejahtera 69 is built based on a website with UML (unified modeling language) modeling tools and the programming language uses PHP and uses the codeigniter framework. This Sales Information System also uses MySQL as its database and is also built using a prototype. This Sales Information System can facilitate the promotion of goods, expand marketing reach and simplify the process of purchasing products for buyers to be more flexible without having to come to the store and make it easier for the owner or owner to supervise his business, both in terms of stock of goods and sales reports and also help admins in managing all activities at CV Sehat Sejahtera 69. Keywords: Information System, Sales, Prototype