Abstract: The safety protection of domestic oil and gas pipelines is increasingly severe, and it is difficult for the emergency rescue teams of long-distance pipeline accidents to carry out actual working condition training. To solve this problem, a real-training auxiliary device for simulating long-distance pipeline accidents was designed and tested on site. This device is composed of short-distance assembled steel pipes and regulating valves. It is shown that the actual pressure difference-flow curve of the regulating valve at a certain opening is basically consistent with the resistance characteristic of the pipe with the same diameter and the corresponding length, which verifies further the feasibility of using the regulating valve to simulate the hydraulic frictional resistance of the long-distance pipeline. This device can provide the working conditions of the upstream and downstream pumping stations which are consistent with the actual pipeline under the limited site conditions by laying short-distance pipelines. Thus, the long is replaced with the short, and training scale and pipeline laying workload are reduced. Furthermore, the accident conditions which are consistent with the actual pipeline leakage, plugging and valve misoperation can be simulated more accurately, and the training level and benefits of emergency rescue teams are improved.