Supply-side structural reform provides a good opportunity for the transformation and upgrading of China's tourism destination supply. Tourism destination supply can be classified according to the content of supply and the supply subject. Statistics show that China's total tourism supply has reached an unprecedented scale. But there are still problems of destination supply. The destination supply is influenced by the policy. The paper reviews and summarizes the existing destination supply policies and analyzes the policy factors which restrict the supply of tourism destination: contradictions in the protection and development of tourism resources, the relevant policies lagging behind the level of market development, the shortage of comprehensive management policies and the shortage of implementation of security policies. Then it puts forward some policy suggestions: integrating resource protection and tourism development, advocating individuation tourism supply, strengthening comprehensive management of destination, ensuring public supply and improving market supply.