The effect of rheometer test plate on rheological test result of grease was investigated.At varied temperatures,the rheological properties of grease were examined by using rotational rheometer on different test plate diameter,surface roughness and test plate types(the plate and the cone plate),and the variation rule was analyzed.The results indicate that during the test of rheological properties of grease,the phenomena of wall slip is shown,and the phenomena is more obvious at higher temperature.The selection of test plate has larger influence on the test error of rheological properties of grease.The small radius of rough test plate can effectively mitigate the effects of wall slip on the grease rheological test.Moreover,the influence of temperature changing on wall slip is also needed to be concerned.