Abstract: For most consumers, buying is a part of daily life that makes them happy and satisfies their needs. But compulsive buying is chronic, repetitive purchasing behavior in response to negative events and/or feelings that is difficult to stop and results in harmful consequences. Compulsive buying is one of the important aspects and less paid attention in researches related to consumer it is considered as the dark side of consumer behavior. This study aims to assess the impact of self-esteem and materialism on the rate of compulsive buying. The statistical population comprises Iranian members of social networks in July 2014. The results indicate that materialism directly and self-esteem inversely affect the rate of compulsive buying.