The invention provides a direct current load flow computing method with network loss considered. The method comprises the following steps of collecting data, computing node injecting active power, listing a direct current load flow equation and solving, computing electric grid branch active power loss, judging whether an iterative operation is conducted or not, and computing network loss equivalent load. The method is improved based on a standard direct current load flow computing method, the active power loss generated by branch resistance is considered, the node injecting active power is corrected by the adoption of the network loss equivalent load, and a direct current load flow computing result with the network loss considered is acquired through the iterative operation method. By means of the direct current load flow computing method with the network loss considered, the problems of the unbalanced active power and unreasonable active power distribution due to ignoring the network loss in standard direct current load flow computing are solved, and the direct current load flow computing result more approaches the real load flow result.