Taking the given rotational speed of journal bearing with a combined slip surface as the research object,based on the two component slip model,the influence of nondimensional slip length(ratio of the bearing’s slip length and clearance),eccentricity and cavitation pressure on the load capacity,attitude angle and friction coefficient was studied by using the mass conservation algorithm,and the results were compared with those under noslip condition.The results show that as nondimensional slip length enhances,load capacity is increased and friction coefficient is decreased.However,all of them will reach a state of saturation when the nondimensional slip length is more than 10.There exists a certain bearing capacity for the bearing with a combined slip surface when the eccentricity is 0.Properly increasing the eccentricity can enhance load capacity,reduce friction coefficient and improve stability of the bearing.The influence of the cavitation pressure on the performance of the journal bearing with a combined slip surface is obvious.