Metasurfaces can manipulate the physical parameters of electromagnetic waves, including polarization, amplitude, and phase. The development of micro-nanofabrication technology further promotes the application prospects of metasurfaces in fields such as display, imaging, sensing, anti-counterfeiting, and optical modulation. However, most metasurfaces lack dynamic modulation, which restricts their scope of application. In recent years, the research on dynamic metasurfaces has made some progress. This review mainly introduces several mechanisms for dynamic metasurfaces, including electrical, thermal, optical, mechanical, and chemical modulations, and summarizes the research progress in the dynamic metasurfaces. In addition, this review also outlines the applications of dynamic metasurfaces in fields such as imaging, display, and optical modulations, and highlights their significance and prospects. Finally, this review summarizes the main problems and future development directions of currently tunable metasurfaces.