Gemilang Shop is a store that sells building materials, lamps etc. The sales system still relies on customers coming directly to the store to make a purchase transaction or simply ask for information about the product. Sales systems like this are still too many shortcomings including in terms of limited store service time and clashed with the busyness of the customer itself, so customers are still difficult to get product and product information. In this thesis, system development is intended to facilitate in promoting and marketing goods sold in the store. The method used in making this website is waterfall method. And built using the programming language php, codeigniter framework and MySQL database. Based on the test results can be concluded that the website created can display products sold, product details, add products to the shopping cart, checkout, display transaction details, confirm payment, and display products according to the list of existing categories.