Abstract: Adult higher education possesses key position and function in the issues concerning agriculture, countryside and farmers of agricultural colleges and talents training in the construction of new countryside. However, it has severe situation and difficulties. By means of analyzing external and internal factors that effecting adult higher education in agricultural colleges, this article offers suggestions of improving the reforms of adult higher education enrollment from the views of increasing the efficiency of internet enrollment, establishing long-term mechanism of encouragement, striving for policy support and changing the traditional correspondence teaching models.