Procrastination is a behavior that evades the task. The two key features of procrastination are postponement and irrationality. Procrastination is often manifested by the use of non-urgent tasks instead of urgent ones, with simple and happy work instead of a difficult one. Sometimes procrastinators can delay the task to the "last second" before the cutoff date. Procrastination can lead to mental illnesses such as guilt, discontent, depression, and self-doubt. There is widespread delay in the time spent by College students, and it is estimated that most of College students have procrastination; allmost all of them think they are procrastinators. Delay has become an important factor affecting the mental health of College students. In this article, we focus on young people, including College students, and try to understand procrastination from psychological perspective, the causes of the delay, as well as the mechanism and management of procrastination, so as to help young people prevent such behavior, especially College students' academic procrastination.