The development of scenic spots is closely related to their location conditions, and scenic spots in advantageous locations are more likely to gain priority and rapid development. Taking the "Silk Road Tourism Belt" as an example, considering the four major location factors of resources, market, transportation and service, it is regarded as evidence, and the DS evidence theory is introduced to measure the location advantage of the scenic spot, characterizing the location from superiority to inferiority with I-V level. Finally, we compare the core area between the location and the tourism development of the scenic spot. The results show that: (1) The location advantage level is significantly different, and the overall spatial distribution law is gradually decreasing from southeast to northwest. From I to V, the center of gravity gradually shifts to the northwest. (2) There are differences in the distribution of location factors. The resource location of scenic spots in Southeast is better than that in Northwest; the difference between market locations is the most obvious, with the characteristics of "long tail" and the phenomenon of "one province alone" in Shaanxi; the inherent differences between traffic locations and the location advantage is similar; the service location is no longer the main factor restricting the location of the scenic spot, but in terms of individual provinces, the "core-edge" structure is more obvious. (3) Compared with the tourism development of scenic spots, the two have obvious spatial correlation, but there is still a certain degree of spatial dislocation.