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A perfect campus green space system on the improvement of students' cultural quality and spiritual civilization has a subtle effect, at the same time, the campus green space system is the construction of campus landscape and environment and an important part of urban garden greening, and environmental landscape construction of urban daily greening has guiding significance to this article selects xi 'an college campus green space as the research object in the plant landscape on the basis of field investigation and related literature for reference and theoretical discussions of xi 'an university campus plant landscape and the example analysis; Plant species was carried out on the selection of college application frequency the seasonal change of in-depth investigation and research, the plant landscape of xi 'an college each function carries on the comprehensive evaluation, found that there were problems, and combining the relevant principles of plant landscape in view of the problem put forward the corresponding optimization countermeasures.