The invention discloses an electrostatic module structure, an electrode assembly and a pole plate structure thereof. The pole plate structure comprises electrodes (11); a plurality of the electrodes (11) are arranged in a linear direction; adjacent two electrodes (11) are connected with each other through a connecting piece (12). According to the pole plate structure, the adjacent two electrodes are connected with each other through the connecting piece; the electrodes are arranged in the linear direction. When the number of the electrodes is required to be adjusted, the overall number of the electrodes can be adjusted by arranging a plurality of pole plate structures in parallel or reducing the number of the electrodes; a specific segmenting or assembling mode is decided according to the actually required total mounting number of the electrodes; waste materials are not produced; the universality of the pole plate structure is improved; moulds are not required to be opened for machining different pole plate structures, so that the production cost is effectively reduced; the connecting piece is connected between the adjacent two electrodes; effective connection among the electrodes of any number can be realized conveniently; the assembling efficiency of the pole plate structure is effectively improved.