Abstract: Wood-plastic composites (WPCs) have been widely utilized in exterior cladding, decking, interior decoration, landscape architecture and automobile interior decoration, etc. WPCs will undergo creep when it is subjected to long-term external forces, which restricts its popularization and application as load-bearing structural materials. This is due to the intrinsic viscoelastic properties of linear or branched macromolecular chains ascribed to their thermodynamic movement. Therefore, increasing the creep resistance of WPCs is an international technique and academic problem needed to be attacked in both industry and academia. Towards a better understanding of creep behavior of WPCs and to improve its creep resistance, this paper reviews the state-of-the-art of the creep characteristics of WPCs. The effects of raw materials, structure, and environmental conditions on the creep resistance of WPCs were discussed. The improving methods for creep resistance of WPCs were summarized and analyzed. The long-term creep test of WPCs is a necessary means to evaluate its durability and safety, but the traditional testing methods are time-consuming and costly. Accelerated testing of creep can be realized by the empirical relationship between creep with time, temperature and external stress. Finally, the applications of Boltzmann superposition principle, time-temperature-stress superposition principle, stepped iso-thermal method and stepped iso-stress method in long-term creep prediction on WPCs were discussed.