Abstract: Particle scatteringtechnolog was employedinthe fabrication of M40J carbonfiber reinforced AlMg10 alloy composite with vac-uumpressure infiltration process.The influence of SiC and amylumscattering particles on the microstructure and property of the C_f/Alcomposits wasinvestigated.The resultsindicatedthat SiCparticleis conducibletoreducinginfiltrationresistance of molten aluminumintofiber bunch andthe well-distribution of thfiber,and soimprovingthe forming and mechanical property of the composite structure.Whenthe fibers were scattered with 5 %SiCand 3 %amylum,particles solution,the volume fraction of fibers inthe composite decrease from 72 %to 51 %,the tensile strength of the composite reached 498 MPa,131 MPa higher thanthat of the composite without particle scattering.