In recent years，accompanied by the extraordinarily rapid developments in the capillary electrophoresis（CE） online coupling techniques with mass spectrometry（MS） and laser induced fluorescence（LIF） spectrometry，CE has been widely used in the areas of life science，environmental protection and food detection.In order to suppress the adsorption of analytes onto the capillary surface and enhance the separation performance and repeatability，coating the capillary column with functional materials becomes the most efficient and commonly used approach.In this paper，the latest progress about covalent and non covalent bonded capillary coatings is reviewed based on the different materials and preparation mechanisms of the capillary coatings.The difference of coatings are compared，and the future direction of coating development is discussed.