In order to solve the problem of surface flashover caused by the state of solid insulation surface

the influ-ence of physicochemical characteristics and surface defects on the surface flashover process is reviewed. Study foundthat there are correlation relationship between the characteristic of the flashover with solid insulation and surfacephysical and chemical characteristics

mainly by the surface microstructure of trap distribution density

surface en-ergy state and surface roughness characteristic factors

and argued that the flashover phenomenon is essentially ahigh electric field under the lose of gas-solid interface charge for operation

and because the solidification processingon the surface of the solid insulation defects

and the analysis of the flashover process will need to consider the com-prehensive function surface physicochemical properties and surface defects. According to the research of flashoverphenomenon caused by the micro cracks on the surface

the evolution process of the surface defects and the influ-ence mechanism was analyzed

the characteristics of the flashover discharge by changing the state of solid insulationsurface characteristics was put forward to improve the method of flashover voltage

and further to explore the flash-over mechanism of gas-solid interface.