Knowledge of consumer behaviour is an important factor in the success of companies. Knowing how the consumer behaves and what factors influence him enables companies to manage the marketing mix, branding and communication more effectively with customers. Identifying the factors that affect consumers is sometimes very difficult to identify correctly, because very often they are internal factors.The current situation currently prevailing in global markets is mainly influenced by external factors – the COVID-19 pandemic and the effects of political and legislative steps and the economic situation. That is, the factors that both customers and retailers had to adapt to. The author aims to identify changes in consumer behaviour when buying basic products – food, drugstore goods, clothing and footwear and electronics during the pandemic of COVID-19. The aim of this article is based on analysis of primary, secondary data and marketing survey to identify changes in consumer behaviour because of political, legislative, and economic factors caused by the spread of illness COVID-19. The result will be the evaluation of changings in consumer behaviour because of the pandemic of COVID-19.