The invention discloses a distributed SF-LT code coding method with the scale-free feature. The method comprises the steps that (1) the feature that the APL of a SFnetwork is the minimum is utilized, the SFnetwork is introduced into the fountain code degree distribution design, and an LT code, namely an SF-LT code with the scale-free feature of the network structure is obtained; (2), the SF-LT code is introduced into a distributed communication system model, and a distributed SF-LT code is obtained. According to the distributed SF-LT code coding method with the scale-free feature, the feature that the APL of the SFnetwork is the minimum is utilized at first, the SFnetwork is introduced into the fountain code degree distribution design, and the LT code, namely the SF-LT code with the scale-free feature of one kind of network structure is obtained, and the decoding efficiency of the SF-LT code is higher than that of the LT code with the same delete probability; the SF-LT code is introduced into the distributed communication system model, the distributed SF-LT code with the high performance is designed, and the decoding performance of the distributed SF-LT code is better than that of the SF-LT code; coding efficiency and decoding efficiency are improved, and meanwhile the decoding success probability of the distributed LT code is improved.