The lubrication process of microconvex texture with different structural parameters under the condition of different speeds was analyzed by numerical simulation method.The law of cavitation effect induced by microconvex texture on the surface of friction pair under fluid lubrication conditions was studied.The results show that the cavitation area is increased and the induced cavitation becomes more obvious by increasing the relative sliding velocity between the surfaces,the width or height of the microconvex texture,and the angles of the front and back of the microtexture.The cavitation effect can suppresses the pressure drop in the negative pressure region at the back end of the microconvex body,and can cause the increase of the bearing capacity of the friction pair.Due to the cavitation effect,the lubrication state is transformed from liquid lubrication to local gas lubrication,and the value of the friction coefficient between two surfaces is also significantly improved.When considering the cavitation effect,the bearing capacity of the friction pair with microconvex texture is increased by 35 to 74 times than that without considering the cavitation effect,and the friction coefficient is decreased by 97.5% to 98.7%.The cavitation effect induced by microconvex texture is obviously greater than the fluid dynamic pressure effect generated by microtexture,so it can be considered that the cavitation effect induced by microtexture is an important bearing mechanism of friction pair with microtexture.