中文摘要：

利用量子双向传态技术构建了一个量子通信网络,从而实现安全的多方通信.对该方案的通信安全性和网络工作效率进行了分析,并提出了改进方法,使得该方案更具有实用价值.

英文摘要：

Making using the technology of two-way quantum teleportation, a quantum communication network to im- plement securely muhipoint communication has been constructed. The scheme＇ s security and network communica- tion efficiency were analyzed, and the improved methods, making the scheme more practical.