Abstract: 3D braided composites have a spatial network structure formed by continuous fiber bundles inside; therefore 3D braided composites have higher interlayer strength than traditional laminated composites, and have higher impact resistance and crack propagation resistance than metal materials. The meso-scale geometrical modeling methods of 3D braided composites are described in detail. The research progress on dynamic tensile and compression properties, dynamic failure criteria and high-speed impact properties of 3D braided composites is reviewed. The future research direction in meso-scale geometrical modeling and dynamic tensile testing of 3D braided composites is pointed out.