Optical interferometry experiments were performed to investigate the dimple phenomena in starved elastohydrodynamic lubrication (EHL) of point contacts under simple sliding condition.PB680 lubricant owning a high viscosity was used to produce a dimple in the contact area.Experimental results show that，with increasing the degree of starvation,the depth of dimple is decreased and the dimple moves to outlet and eventually disappears under low sliding velocity conditions.Under high sliding velocity,the depth of dimple is decreased with a small circular dimple appearing at contact center due to the effect of starvation.A doubledimple phenomenon may appear at contact center under starved conditions.Until sever starvation,the dimple fades away.By decreasing the applied load,the elastic deformation of contact is reduced,making the oil phenomenon less obvious.However,the dimple depth is increased by the oil starvation.