How to satisfy tourists’ demand has been an important issue in tourism development management. Tourists’ perception evaluation of destination’s conditions will influence its’ sustainable development. After acquiring internet content of the Xi'an ancient city wall, the paper obtained the high-frequency characteristic words by the tool of Rost CM6. After that, the frequency distribution of the high-frequency characteristic words was analyzed by SPSS. Finally, this paper discussed the information perception and evaluation system of the tourist destination based on the grounded theory. It indicated that the high-frequency words took on "long tail" distribution, and the evaluation system was the interaction of functional and emotional factors. The evaluation system of destination’s information perception was built up by the tourist service, traffic conditions, tourism environment, resource development, tourist experience, scenic management, product supply and tourist scale. This system is aiming at providing tourism managers with reference for shaping the destination image as well as carrying out suitable marketing strategies.