The invention provides a photovoltaic phase change wall system and an implementation method of the photovoltaic phase change wall system. A photovoltaic panel is attached to the outer wall of a phase change wall, solar energy absorbed by the photovoltaic panel is converted into electric energy and stored in a storage battery connected with the photovoltaic panel, the stored electric energy can be used for forced ventilation at night in a hot summer and warm winter zone to promote the phase change wall to release heat to achieve phase change cycle, and therefore the problems that in the prior art, the efficiency of the photovoltaic panel for converting light energy into electric energy is low due to the fact that the temperature of the surface of the photovoltaic panel rises, and temperature adjusting capacity of the phase change wall is low due to insufficient phase change cycle are solved. By the adoption of the photovoltaic phase change wall system and the implementation method of the photovoltaic phase change wall system, solar energy can be efficiently utilized, phase change cycle of the phase change wall is promoted, the temperature of the photovoltaic phase change wall can be efficiently adjusted in an energy-saving mode, and an appropriate heat comfortable environment is provided for indoor space of a building under the condition of low or even zero energy consumption.