The invention discloses a comprehensive simulation platform establishment method of a photovoltaic power station. The comprehensive simulation platform establishment method comprises the following steps: establishing a photovoltaic grouping equivalent model; modeling other parts of the power station, and configuring parameterized power capacitors, transformers, inverters and controllers thereof; establishing a power grid side model, establishing a load and an equivalent model of typical power plants, and completing a photovoltaic grid-connected model; and establishing a visual simulation interface. According to the comprehensive simulation platform establishment method, a relatively accurate model of the photovoltaic power station is provided for builders of the power station, the characteristics of battery panel groups and the photovoltaic power station are researched based on complicated local environment, and comprehensive simulation platforms are established in sequence, so that photovoltaic research is more convenient and reliable, the feasibility of establishment and modification is verified, and practical problems are discovered and solved as soon as possible.