Abstract: The analysis of special hydraulic condition and operation problem of batching in pipelines is presented. The general energy balance equation of pipeline and the synthetic dynamic pressure e-quation of the critical points in pipeline are proposed. The method of seeking the allowable maximum throughput, which is subjected to the operational condition, is also proposed. With the throughput, the surplus of pumping pressure for the flow dissipation are calculated, which must be suppressed by regulating. In accordance with the principle of upstream regulation priority, the regulating pressure is reasonably apportioned to pumping stations to acquire the benefit of making pressure gradient as near as possible to pipeline profile. In the end, the general computational scheme for the optimal operation of batching in pipelines is offered.