Abstract: This application provides a fragmented packet traffic rate limiting method, a DPU fragmented packet forwarding method, and an electronic device. The rate limiting method includes: pre-coloring a target fragmented packet based on a preset packet fragment coloring table such that the target fragmented packet is provided with a color mark, where the color mark includes a discarded color and a reserved color; performing traffic evaluation on the pre-colored target fragmented packet based on a color-aware token bucket algorithm to perform secondary coloring processing on the target fragmented packet, and updating the packet fragment coloring table based on the color mark of the target fragmented packet subjected to secondary coloring; and performing rate limiting processing on a target fragmented packet which is marked as the discarded color.