Abstract: Fiber reinforced resin matrix composite (FRP) is a material composed of fibers and resin matrix, which has a wide range of applications in various fields. The use of numerical simulation methods can more easily and accurately predict the performance of FRP bars/cables, thereby accelerating design efficiency and reducing experimental workload. Therefore, a large number of scholars have conducted numerical simulation research on FRP bars/cables. This article mainly introduces the simulation control factors and requirements of unidirectional fiber reinforced polymer composites, studies the theoretical models and analysis methods of FRP at micro, micro, and macro scales, proposes the shortcomings of numerical simulation of FRP bars/cables at different scales, and the application of numerical simulation at micro, micro, and macro levels. The focus is on the application of different scale numerical simulation methods in FRP bars/cables, as well as the latest progress in multi-scale numerical research, as well as the numerical simulation methods and current status of FRP bars/cables in the anchorage zone. Finally, a brief explanation is given of the possible research and development directions of FRP bar/cable numerical simulation in the future. To provide reference for the development of refined FRP reinforcement/cable damage and performance prediction models.