The invention discloses a method for regulating light field polarization state distribution. The method relates to a laser alignment and beam expanding system, a special shape vector light field generation system and a focusing and detecting system. The method includes the steps that a vector light field is generated by a hologram, the hologram is controlled by a computer, phase modulation information and shape modulation information are loaded, the hologram is projected to a space photoconverter, and the vector light field special in shape is generated. A focus field with the controllable polarization state distribution can be obtained at the position of a focal point through focusing. By means of the method, after the incidence vector light field with local linear polarization distribution is focused, a focal field, with hybridization distribution with linear polarization, circular polarization and elliptic polarization at the same time, on a focal plane is obtained. The shape of the incidence vector light field is changed, and the focal field with any polarization state distribution can be obtained. Compared with other common light field modulation methods, the method has the advantages that the polarization states of points can be accurately regulated; meanwhile, the method has the advantages that the light path is simple, the technology is mature, and the stability is high.