At the beginning, it was established to solve the problem of academic education and continuing education of on-the-job personnel, and most of the participants were adults. Like the general college entrance examination, candidates need to take the national unified entrance examination for adult colleges and universities once a year. In the past, the exam was held in May every year. Since 2004, it has been changed to the second weekend exam of 10. At present, the subjects of adult college entrance examination at the starting point of high school are close to those of ordinary colleges and universities, which is more convenient for high school graduates to take the exam. After the examination, candidates can begin to receive higher education after reaching the minimum admission control score and obtaining admission qualifications. Adult college entrance examination is different from ordinary college entrance examination in terms of enrollment objects, learning forms and enrollment institutions. Ordinary college entrance examination is dominated by senior three graduates, and adult college entrance examination candidates are mainly on-the-job employees. In the past two years, the proportion of secondary vocational school graduates has been rising. Institutions undertaking adult higher education are divided into ordinary colleges and independent adult colleges, with amateur learning as the main form. There are three forms of study, one is adult full-time classes, the other is correspondence (self-study, supplemented by face-to-face instruction), and the other is evening classes (mainly study at night and weekends). Students can get college and undergraduate diplomas recognized by the state after graduation.