Electronic commerce (e’commerce) related to the internet for buying, selling, transporting, or exchanging info, products, or services. There are many advantages of e-commerce, including operational Benefits like the one global reach, cost reduction, promoting Issue Prevention, optimizing the supply chain, and always opening up business. That nation has SMES, and SMES is the largest foreign exchange earners in the country to be able to compete, with SMES being able to expand their transaction business via the Internet. The aim is to determine critical factors in the adoption of e-commerce for SMEs. That first analysis presented a comprehensive review of the literature onto the context for e-commerce research These methodology is divided into several parts: determination of research sources, identification of keyword structures for process search, implementation of criteria for inclusion and exclusion, extraction of data, and review of findings to address scientific questions. From the result of the literature research, there are several main factors for SMEs to adopt e-commerce such as Technological Factor that consists of : interception, Relative Advantage, Compability, IT infrastructure, Security. The Organizational factor consists of : Involvement & consistency, Top Management support, Financial Resources, Human Resources. External Factor consists of: competition aong organizations, and government support. And the individual factors are behavior to counsumer, excellent service, education, & computer Skill.