In the field of elastohydrodynamic lubrication,the lubricating pattern,film thickness and friction of lubricating oil film are very important information to study the lubrication state and lubrication mechanism in the contact area.A point contact optical interferometry EHL test rig with intersection of surface velocity was developed.The test rig uses interferometry as the measurement method,realizing the change of the surface velocity angle of the contact pair by combining the arc track,and uses the rotating system to transform the friction of the contact pair system into compressive force，the measuremet and calculation were carried out with the intersection of surface velocities by using high-precision pressure sensor and friction direction formula.Under the condition of limited oil supply,the lubricating pattern and film thickness of point contact with variable angle were observed,and the effect of angle on the improvement of starved lubrication and the variation of film pattern were explored.The results show that by changing the surface velocity direction of the contact pair,the inlet oil pool is improved and the central film thickness increases.