1. College students (postgraduates, undergraduates and junior college students) are a special group in social communication, and they refer to people who have received university education. As the frontier group of social new technology and new ideas and senior professionals trained by the state, they represent the most advanced pop culture. College students represent young people and energetic people, and they are the pillars to promote social progress. College students, that is, groups who enter and receive education in universities, including full-time and after-school study, are usually students at school, excluding self-taught students. Graduates from various institutions of higher learning are generally called university degrees. 2. College students include junior college students, undergraduates and graduate students (master students and doctoral students). That is, three levels and four levels: (three preparatory universities-junior college; Junior university-undergraduate) senior university-postgraduate higher education: junior college students, undergraduates, master students, doctoral students). No matter what kind of study. Strictly speaking, according to international practice, "bachelor, master and doctor" is the most important rank form for college students. 3. At present, 89% of the qualifications in the talent market in China are junior college (dominated by junior college), while the general establishment of academic qualifications in China is low. Including: all kinds of students in ordinary colleges and universities (including scientific research institutions undertaking postgraduate education), Carmen College, vocational and technical college and junior college. In other words, there are students in more than two courses in higher education, including junior college students. Colleges and universities are divided into ordinary colleges and universities (full-time colleges and universities) and adult colleges and universities (amateur study). At present, colleges and universities are the main education, supplemented by adult education.