This study explores the relationship among green purchase behaviour, parental influence, peer influence and environmental knowledge in the area of green marketing from a consumer perspective. The present study is an attempt to investigate the green purchase behaviour of Macau youngsters. Analysis on the strength of the relationships between each pair of variables was being measure through Pearson's R in SPSS. Findings confirm that the three variables proposed in the theoretical frameworks all exist a significant positive relationship with green purchase behaviour. The consumption pattern of Macau youngsters is greatly influenced by their peers and parents since green purchase behaviour carry out a certain level of social meanings and values. In addition, Macau youngsters possess a relatively high level of ecological knowledge, which significantly affects their green consumptions. Finally, this study discusses managerial implications for marketers to do a better strategic marketing performance through educating and motivating young consumers.