The invention discloses an optical storage power station and load time sequence matching degree optimization control method, in order to improve the photovoltaic absorption level, reduce the investment and operation and maintenance costs of energy storage equipment and improve the utilization rate of equipment. By controlling the charging and discharging power of an energy storage battery, the time sequence matching degree between an optical storage power station and a load is improved, and the power fluctuation of a line and the disturbance to a power grid are reduced. The method has the advantages of clear process and definite physical concept, and can improve the photovoltaic absorption level and reduce the investment and operation and maintenance costs of energy storage equipment.