Structural color originates from the interaction between light and periodic submicron structures and has led to many unique functions in nature, inspiring the development of material science. In sensing changes in the external environment, animals use color changes to transmit signals and accomplish behaviors such as communication, camouflage, vigilance, and courtship. Responsive photonic crystals are considered to be one of the best artificial materials for preparing color-changing functions, i.e., when induced by external stimuli, photonic crystals change their own periodic structure to modulate the properties of light waves, producing color changes in visual effects associated with wavelength changes. Among them, the cholesteric liquid crystal (CLC) exhibits unique selective reflective properties due to its self-assembled helical structure forming a periodic arrangement of dielectric constant and refractive index, is endowed with advantages such as polarization-dependent generation of structural color and dynamic tunability, and is rapidly developing in research fields such as dynamic display, information storage, and optical security. People have been changing the working wavelength and reflectivity by using optical, electrical and thermal responsive chiral molecules, multilayer composite structures, phase transitions and many other methods. However, there are still problems such as easy destabilization and limited regulation mechanisms, so it is still a challenge to design and prepare reflective liquid crystal photonic devices with multiple responses, real-time reconfigurability, and dynamic broadband tunability.