This study aims to determine the effect of Ease and Confidence Using E-commerce Online Purchasing Decision Against (Survey of Consumer www.petersaysdenim.com). This type of research used in this research is an explanatory research with a quantitative approach. Source of data in this study are primary data and secondary data, primary data used by spreading an online questionnaire to the respondents, and secondary data used is derived from the reports, journals and archives relevant literature-literature. To measure and research the data reveal precisely this study validity and reliability testing. Data analysis using descriptive analysis and multiple linear regression analysis. The results showed that significantly influence the ease of online purchasing decisions, trust significantly influence purchasing decisions online, and ease of use of e-commerce trust significantly influence purchasing decisions online simultaneously. The results of the analysis can be seen that with the ease of transaction mengoperasional process affecting consumers to use e-commerce. The better the facilities provided by the website ease petersaysdenim.com it will improve also purchases by consumers online. Convenience facilities provided by the website petersaysdenim.com diantaran is the ease of obtaining information, ease of use, and has a clear display interface. Significant influence indicates a high level of consumer confidence.