Abstract: Metal Matrix Composites are developing towards the large scale commercialization.Among all kinds of Metal Matrix Composites,Particle reinforced Metal Matrix Composites (PMMCs)takes up the first position due to its low cost product and comprehensive excellent properties.The mechanical properties and physical properties of typical PMMCs were listed.And then the application in space structure and problems existing with regards to farbrication technologies and engineering applications were analyzed,and the measurements which were usually taken to settle these problems were presented. Finally ,the paper briefly previewed the development of PMMCs in China.