Abstract: A model of the compressive st rength of metal mat rix composites reinforced by porous network st ructurehas been proposed and modified through the mixing rule and referring the Zum- Gahr model and Khruschov model.The composites with different volume f raction reinforcement s were fabricated via the method of infilt ration by pressure assisted and vacuum driven ( PVI) . Many test data of compressive st rength were obtained using YAW-1000pressure experiment machine and proved the correctness of the model. The model includes maximum limit and minimum limit , the maximum limit follows a linear rule while the minimum limit no longer does. The result s show thatthe compressive st rength of metal mat rix composites with interpenet rated and intertwisted st ructure is improved distinctly and increased with the increasing of volume f raction of the reinforcement . Specially , the compressive st rengthincreases greatly when the volume f raction exceeds 80 %.