The emerging energy crisis has triggered significant attention on solar cells all over the world. Although crystalline silicon solar cells are currently widely used, their high cost limits the development of solar power generation. Consequently, hybrid solar cells are becoming increasingly important, especially organic-Si hybrid solar cells (HSCs). Organic-Si HSCs combine a mature technology and high efficiency with the low-temperature manufacturing process and tunable optoelectronic properties of organic solar cells. The organic material can be P3HT, carbon nanotube, graphene and PEDOT:PSS. In this paper, we review the performance of PEDOT:PSS/Si HSCs and methods of improving their efficiency, such as modification of the PEDOT:PSS, optimization of the trapping effect, passivation of the silicon surface, addition of an interface layer, improvement of a back contact, and optimization of the metal top electrode. This review narrows gaps in articles in this area and provides perspectives for future development of the PEDOT:PSS/Si HSCs.