In recent years, the field of the environment has received special attention from many countries. Environmentally friendly products are the top way to limit the negative impacts on the living environment in the world. In many countries, plastic bags have become an environmental disaster. To determine plastic bags and plastic boxes, it is necessary to implement many solutions. Environmentally friendly plastic bags (eco-bags) are also one of the solutions for people to limit the use of plastic bags and boxes plastic. This article investigates the key factors affecting people's intention to use eco-bags in Nam Truc district, Nam Dinh province, Vietnam. The survey of 256 people living in Nam Truc district, Nam Dinh province, Vietnam, shows that 5 factors affect the intention to use eco-bags, including Knowledge, Attitude, and Price. Individualism and collectivism, in which collectivism is the most influential factor. Therefore, the article proposed managerial solutions for companies providing eco-bag services to plan appropriate strategies to increase the number of people using eco-bags.