Environmental problems, especially in the case of water and air pollution, are the harmful result of the overconsumption of fossil fuels as well as various forms of industrial sewage water discharge. Recently, growing environmentally friendly purchasing behaviour of consumers has become regarded as an effective method for alleviating such environmental problems. Due to concerns regarding the natural environment, consumers have increasingly begun to exhibit favourable attitudes towards environmentally friendly products, and as a result, are more likely to purchase “green” products. However, green purchasing behaviour of consumers varies across different nations and cultures. This study aims to reveal how Chinese cultural values (specifically, the Doctrine of the Mean) influence green purchasing intention of Chinese consumers. As the lifestyles of consumers will be deeply affected by their cultural values, this study examines the mediating effects of the four dimensions of Chinese lifestyle have on consumers. At the same time, environmental knowledge is considered as a moderating variable in order to investigate the relationship between the Doctrine of the Mean and green purchasing intention. The study’s data were collected from Chinese consumers. Empirical results reveal that such Chinese cultural values are positively associated with green purchasing intention, and that three dimensions of consumer lifestyle (namely leadership, cost consciousness and development consciousness), are all found to play mediating roles in the relationship between the Doctrine of the Mean and green purchasing intention in Chinese consumers. The moderating effects of environmental knowledge are exhibited in the influence of leadership as well as development consciousness on green purchasing intention. The study’s findings have theoretical implications for understanding green purchasing intention as well as behaviour of Chinese consumers further. The study’s findings also present practical implications for how to promote green purchasing intention in Chinese consumers better.