In recent years, it happens sometimes that college students suffer from physical or mental illness, which even
leads to temporary absence from school or even a suicidal. In 2008, a report on changes of numbers of college
students, from the Ministry of Education of China, points out: a sample survey based on more than 10 million
college students in China shows that 20.23% of college students face mental disorders due to mental stresses,
and 54.4% of drop-out college students are caused by mental stresses. The mental stress stystem is extremely
complicated. To study the relationship of mental stress sources and mental stresses of college students
systematically and find effective ways for reducing stresses can not only help to prevent and correct the mental
disorders of college students, but also turn to be a useful complement for theories of stresses.