Alfaonline was officially opened in Semarang on February 2013. Alfaonline is the way Alfamart customers get the merchandise through an online application, while the goods may be at the store or at the warehouse and the customers may get the products by home delivery . The Alfamart staff will do everything to increase sales. The buyers who have Alfaonline account will have positive impact on increasing sales of Alfaonline. Promotion is one method to increase sales. The promotion consists of four components, namely: Advertising, personal selling, Sales promotion and publication.This research is quantitative. Technique sampling was used in this study.Questionnaire data collection techniques that have been tested for validity and reliability.The results of the study at significant level of 5% showed that: (1) there is a direct influence of Campaign with Advertising dimension to the purchasing decision. This is proved by evidenced from the t value of 4.130 with a significance value of 0.000, which means t> t table (4.130> 1.984). (2) there is a direct effect of sales promotions to-face dimension to the purchasing decision. This is evident from the t count equal to 3.317 with significance value of 0.001, which means t> t table (3.317> 1.984).