The porous oil storage medium is the core of the selflubricating rolling functional parts.The different pores of the internal pores reduce the usage rate of the lubricating oil.This paper proposes a method for preparing porous oil storage medium with oriented pores was proposed.The porous medium with directional pores was obtained by pressing molding,coating high temperature sealant and vacuum sintering with polytetrafluoroethylene (PTFE) powder as base material and benzoic acid as poreforming agent.The influence of molding pressure and poreforming agent mass fraction on the properties of the hardness,density,porosity,oil storage rate and oil retention of the porous media were analyzed.The results show that the preparation pressure has a linear positive effect relationship and a negative effect relationship with the hardness and dry density of the porous medium respectively,and has no significant effect on the porosity,oil storage rate and oil retention rate.The poreforming agent mass fraction has a linear negative effect relationship with the hardness and density of the porous medium and a linear positiveeffect relationship with the porosity.The larger the poreforming agent mass fraction,the greater the oil penetration rate in the initial stage of the oil rejection,but the effect on the final oil retention rate is not significant.The internal pores of porous medium have a fibrotic structure with a karst cave type.The internal pores penetrate each other with good orientation.