CV Trikarya Utama Palembang is a company in the city of Palembang which is engaged in food and beverage. In 2002 CV Trikarya Utama Palembang increased business associations and also acted reliably by providing food and beverage suppliers. The problems faced by CV Trikarya Utama Palembang in the sales and inventory section are still done manually, so they have to record or process data repeatedly and look for large amounts of data which makes it difficult to process data. The purpose of this study is to build a computerized information system for selling goods starting from sales data, data on goods in the warehouse and in checking reports. This research uses the Extreme Programming method because in the development process it is ready to accept changes quickly. The results of this study are that it can assist in the process of managing data and information appropriately, and efficiently as well as increasing productivity, time and costs. Keywords : Information System, Sales, Extreme Programming