In recent years, the term "Global crisis" has regularly appeared in public media. Global crisis has affected every single country all over the world. Vietnam - one of the developing countries in Asia is not an exception. The downturn of many companies was the result of the slow adaptation to the change in consumers' behaviour. Thus, this book aims to study the impact of global crisis on Vietnamese consumers' behaviour, looks deeper into the consumers' awareness of this problem and analyses whether their consumption behaviour has changed as a result. To gather the data, the author collects answer from survey questionnaire which targets Vietnamese consumers, combines with some previous researches to compare their consumers' behaviour before and during financial crisis time. Moreover, the author analyzes various online articles and written documents as well as economics specialists' opinions to figure out the changing trends in Vietnamese consumers' behaviour. This book can be implicated as reference information for Vietnamese & foreign companies to have better understanding of Vietnamese consumers' behaviour changes in the context of global crisis.