PA6 foam composites were prepared by chemical foaming injection molding using glass fiber, talc powder and glass GF/talc composite particles as reinforcement respectively. The effects of glass fiber length and content, talc particle size and content, and glass fiber/talc composite particles on mechanical properties, rheological properties and foaming behavior of the composites were investigated. The results showed that glass fiber can effectively improve the mechanical properties, heat resistance and rheological properties of the material enhancing its foaming ability. The glass fiber with a length of 3 mm is the most beneficial to improve the performance of the PA6/GF composites, but the density of composites is too large, which is not conducive to lightweight. Although talc powder have limited improvement on the properties of composites, the density of PA6/talc composites is relatively small, which was conducive to lightweight. The components of composite particle GF / Talc can be complementary and synergistic, which overcome the shortcomings of single filler. Especially when the mass ratio of PA6/GF/Talc is 70/20/10, the composite material have high strength as well as lightweight showing good comprehensive performance.