Abstract: As a new development of information technology in recent years, the "internet of things" has received worldwide concern. This paper preliminarily discussed how the urban spatial structure would be influenced by the development of "internet of things". "Internet of things" will strengthen both the trends of gathering and spreading in the further. This can lead to an urban spatial structure of non-equilibrium situation, with both trends developing. It will also weaken urban functional division, and strengthen urban internal and inter-regional integration. At the regional level, the pattern of the urban system will gradually move toward the flat network system from hierarchy under the influence of "internet of things". And the new polarization will promote a new space structure of "core-periphery". Above all the theories, this paper took Changchun as an example and discussed the influences of "internet of things" on Changchun’s urban spatial structure from three aspects: the internal urban spatial structure, the external urban spatial structure, and the development of the city.