Abstract:Two-dimensional(2D) code tree sign can effectively promote the construction of ecological campus and publicize the idea of ecological civilization. It is a general trend to apply 2D code tree sign to the informatization management of landscaping seedlings in campus. This paper introduces the production process and application value of 2D code tree sign, and obtains the application status of 2D code tree sign in Qiannan Normal University for Nationalities through questionnaire survey. The results show that college students pay more attention to the plants around them, but the science popularization value of 2D code tree sign needs to be developed towards more standardized and humanized. Four suggestions on the optimization and function expansion of 2D code tree sign are put forward. The first is to adopt appropriate materials and hanging methods, the second is to improve the 2D code data system, the third is to reasonably apply the intelligent maintenance of campus trees, and the fourth is to serve as a carrier to promote excellent culture.