This article addresses the issue of low-frequency mechanical energy in the human body and the relatively low energy harvesting efficiency of traditional contact-separation nanogenerator. A novel assisted-structure nanogenerator designed for self-powered communication systems is proposed to tackle this problem. The assisted-structure can effectively transmit and enhance forces, which can reduce the excitation required by the triboelectric nanogenerator for energy collection by 8.6 times with similar output performance. With the aim of self-powered communication, after encoding information, the human body′s mechanical energy acting on the assisted-structure nanogenerator is utilized to modulate and transmit the signals. In the voltage signal, a half-wave rectification circuit is designed to reduce the influence of positive and negative half-axis waveform asymmetry of the voltage waveform of the TENG. The analog voltage signal corresponding to the power assisted structure nanogenerator is collected and after corresponding demodulation and decoding, the original information can be recovered. The experiment successfully transmitted the string "NJUPT".