The surface morphology of the static seal interface is rough at the micro scale,and the asperities on the two rough surfaces will contact and form pores under the load.With the decrease of contact pressure or the increase of observation scale,when the number of pores increases to a certain amount,the pores will be interconnected to form a leakage channel,affecting the sealing performance.The existing leakage channel models of rough surface seal analysis are established based on the idea of homogenization,percolation theory and porous media thought,which consider the influence of surface roughness,surface texture and load on the sealing performance.The present research status of sealing performance between rough surfaces was reviewed,the shortcomings of existing research methods for rough surface sealing were analyzed,and the possible research direction of sealing between rough surfaces was pointed out,which provided reference for further study of sealing mechanism between rough surfaces.