The invention is applicable to the technical field of reactive optimization of a power grid, and provides a photovoltaic inverter reactive mode optimization selection method, terminal equipment and astorage medium. The method comprises the steps of acquiring a daily typical running scene of a photovoltaic cluster; and according to the daily typical running scene, and a preset comprehensive targetfunction and a constraint condition thereof, performing optimization selection on the reactive mode of each photovoltaic inverter in the photovoltaic cluster, to acquire an optimal reactive mode of each photovoltaic inverter in the photovoltaic cluster. According to the photovoltaic inverter reactive mode optimization selection method, terminal equipment and storage medium, during the process ofperforming optimization selection on the reactive mode of the photovoltaic inverter, communication interaction between the photovoltaic inverters is not needed, and the problem that when the existingdistributed photovoltaic power generation equipment is inconvenient to communicate, reactive optimization and voltage regulation effects are poor is solved.