Due to the fact that information technology develops well, Internet marketing companies are very competitive. Hence, it is important that the discount information of products displays instantly on Internet to help a successful trade. The study aims at to develop and build an instant discount information system on the Internet. The system has instantly discount information for buyers to reference and order. The shops can offer discounts on their overproduction or newly products for customers to try and the discount information can instantly acquire by the customers. Compares to other marketing platforms, our system publishes the discount information in no time by keywords of products and addresses of the shop. The revised system in the future should combine GPS and simplify the limitation for customers and stores in order to acquire more membership.