Surface texture of bar and elliptical with three different distributions was corroded by nanosecond laser on the surface of plunger specimens.The influence of edges bulge of texture cause by the accumulation of molten metal on the tribological performances of plungerseal pair were investigated under the simulation condition of fracturing pump (the test force is 400 N and the speed is 200~1 500 r/min) by using the MMW1 computer controlled tribometer.The results show that the textures with edges bulge have not obvious antiwear and friction reducing performances on the plungerseal pair,even exacerbate the friction and wear of plungerseal matching pair.The main reason is that the edges bulge of micro pit exacerbates the scratch of plungerseal pair,the hydrodynamic lubrication effect produced by micro pit is less than the scraping effect caused by edges bulge of micro pit.The friction coefficient and wear volume of the texture specimens after polishing treatment are lower than those of the specimens without texture and the texture specimens without polishing processing,indicating that the antiwear and friction reducing performances of the texture specimens can be effectively improved through controlling the processing quality of texture.