Based on the theoretical analysis of the 23 kinds of wiring error of the common three-phase three-wire high voltage measurements, a new method of error power compensation is deduced in this paper.The method can directly use the power meter record in the wiring error of positive and negative active power and reactive power of four-quadrant, accurately calculate the actual consumption of electricity during the wiring error, avoid using the power factor calculation compensating power correction coefficient method or comparison of traditional compensating method, because some compensating is difficult to determine the factor caused by the compensating error.In order to prove the validity of the method, several kinds of wiring error are selected to carry out the experiments under the condition of inductive and capacitive load.Compared with the traditional method, this method has higher accuracy and reliability and is easy to implement.