The purpose of writing this paper is to analyze the e-commerce system on the largest online shopping site in Indonesia, Shopee. co.id. The analysis includes, the advantages and disadvantages of Shopee Indonesia and SWOT analysis on the site. Analysis result shows that Shopee Indonesia is able to become the largest online shopping company in Indonesia with a variety of service advantages and transaction security guarantees. However, Shopee also still has some weaknesses, including regarding the security system, with many consumers still experiencing fraud. Shopee company Indonesia uses inovation strategies and bargaining power of consumers and suppliers to make it the largest online shopping company in Indonesia.