This study discusses the effect of Online Reviews and Volume Reviews on Purchasing Decisions. Quantitative research approach by examining 91 respondents of Shopee E-commerce users. The sample was selected using a total sampling approach. Data collection was carried out with an online questionnaire and data analysis using SPSS version 27. Research findings show that Online Reviews and Volume Reviews have a significant effect on Purchasing Decisions. The impact of online reviews and volume reviews underscores the relationship between reviews made by consumers and the number of reviews on a product or service in influencing consumer behavior in purchasing decisions.