Tourism industry develops so fast that all-for-one tourism has become a national strategy, but its development is much constrained by the original administrative division, especially in resources-based cities due to their administrative division on mines. Administrative division is a key factor in all-for-one tourism, which also influences administrative division. This paper, based on a case study on Hegang city, Heilongjiang province, analyzes Hegang's current administrative division and its inconsequence, presents a path to administrative division favorable for all-for-one tourism from internal tourism cities' administrative division and adjustment combined with local administrative division and tourism resources distribution, in merging downtown and developing mine cultural tourism, in setting up Heilongjiang river industrial zone to develop river ecological tourism, and in advocating and promoting to finally achieve industrial transformation and revitalization of resources-based cities.