Abstract: In the world, Hainan Island is a representative of large tropical islands, Hainan Island tourism development trajectory has a certain degree of particularity and typical.The development of tourism in Hainan is extremely imbalance in space, and the tourist flow volume in some cities and counties is disproportionate to the level of tourism income. Under the background of Hainan international tourism island construction and global tourism, how the Hainan Province makes a coordinated development is an urgent problem to be solved. The paper using the center of gravity model for the analysis tools, analyzes the developing orbit of the main part of tourist and consumption in Hainan Province, and also analyzes its impact factors in depth. The results show that since 1996, the focus of tourists and consumption used in the position by east in the whole province has been skewing to south and west year by year. The core of the tourist and the core of consumption has always been inconsistent. Their evolutions have experienced from far to near and from near to far. The tourism development of the province presents the dual-core phenomenon of Haikou and Sanya. And the polarization effect of the two cities has reached saturation, the diffusing effect and driven effect on the periphery have enhanced gradually. In Hainan Province, the main driving factors of the core of tourist development and the core of consumption development include the geographical relationship, resources, policies, products and so on. But the quality of tourism products is the key factor to attract tourists.