Thirty Two Thai university students participated in a project to explore personal use of plastics and plastic effect on human, animals and the environment. They collect date about use of plastics bag, staw, and bottles for 5 days, and they take the collection for calculate average. After that they read and watched video about plastics effect on human, animals and the environment. Then, they collect date for the second and calculate average again for compare between the first collect date and the second. Researcher found that Thirty Two Thai university students try to decrease plastics and refuse to use plastics bag. Therefore this project has changed personal use of plastics.se to use plastics bag. Therefore this project has changed personal use of plastics.