With the rapid development of distributed photovoltaic power generation, how to correctly measure the electrical energy generation, injecting into the grid and absorbing from the grid of a distributed photovoltaic power generation project, and bring price incentive mechanisms into full play have become an urgent problem to be solved. Based on the existing relevant policies, this paper summarized the requirements on the electrical energy measurements, put forward the measurement scheme. By analyzing the wrong wiring, this paper proposed several suggestions on it.