The model program “One Commune, One Product” (OCOP) in Vietnam was started in 2006 and officially implemented in 2018. ST24 rice of Soc Trang province, Luc Ngan lychee of Bac Giang province, Hao Dat tea of Thai Nguyen province, or many other products have been becoming more popular with OCOP certification. The achievements from the program have contributed to creating jobs, and developing the rural economy while preserving the material and spiritual values in the local culture. From the perspective of business entities, the current challenge is how to sell goods, how to capture the tastes of consumers, and determine what factors affect the intention to buy products. OCOP. The authors conducted the research on the purpose of predicting the impact of factors on the intention to purchase OCOP products to consumers in Ho Chi Minh City. Using the Multiple Linear Regression method on the data set of 188 respondents. The theory of planned behaviour is the main framework across research and development along with The Norm Activation model. The results show that Subjective Norm (1), Perceived Behavioural Control (2), Attitude (3) and Moral Norm (4) have a positive impact on the intention to purchase OCOP products of consumers in Ho Chi Minh City. The conclusions also suggest solutions for OCOP product business owners to promote consumption.