Large-scale photovoltaic (PV) power plant has massive operating points. The operation for PV devices through conventional control methods will seriously affect the operating safety in the PV power plant. This paper presents a control method adapted for the massive operating points. It uses the technology of parallel control instruction distribution combined with a variety of control principles to effectively solve the timeliness problem. This method has passed the simulation test and its feasibility has been partially verified by the actual operation in a PV power plant.