网络损伤是指在网络部署过程中,网络数据经过物理连接器、传输设备、网络设备传送过程中,必然引入的误差,包括常见的循环冗余码(CRC,Cyclical Redundancy Check)校验错误,也包括报文延时、乱序、丢失等。本文旨在介绍数据网络中损伤的特点,实验室模拟手段以及在检测实践中的意义和若干探索。 Network damage refers to the inevitable error introduced in the process of network deployment, such as the common Cyclic Redundancy Check (Cyclical Redundancy Check) error, as well as errors in the transmission of network data through physical connectors, transmission equipment and network equipment. Including packet delay, disorder, loss and so on. The purpose of this paper is to introduce the characteristics of damage in data networks, the means of laboratory simulation, and the significance and exploration in the practice of detection.