The fixed installation method directly places solar photovoltaic modules toward low latitude areas (at a certain angle to the ground) to form solar photovoltaic arrays in series and parallel, thus achieving the purpose of solar photovoltaic power generation. There are various fixing methods, such as ground fixing methods are pile method (direct burial method), concrete block counterweight method, pre-buried method, ground anchor method, etc. Roofing fixing methods have different programs with different roofing materials.