提出了一种新的近红外多用户量子密钥分发中波长交换方案,解决了量子网络中信息交互难题;分析了交换过程中近红外单光子束的偏振变换;仿真了波长交换效率和泵浦光功率之间关系.仿真结果表明,该方案可行并且高效. A new wavelength switching scheme for near-infrared multi-user quantum key distribution is proposed, which solves the problem of information exchange in quantum networks. The polarization transformation of near infrared single photon beams in the process of exchange is analyzed. The efficiency of wavelength exchange and pump Optical power relationship between the simulation results show that the program is feasible and efficient.