General sealing working parameters include friction,liquid film thickness,contact stress,leakage rate,etc.The friction test has great reference value for the improvement of seal structure and the theoretical research of reciprocating seal technology.The research progress of the test sealing friction device was summarized,some suggestions for improvement were put forward in view of the problems existing in the sealing friction testing device.The characteristics of different sealing friction test schemes and the test error of friction test device were analyzed,and the schemes to improve the test accuracy were proposed.