The invention discloses an organic small molecular photoelectric functional material. The organic small molecular photoelectric functional material containing porphyrin units and different dye units is prepared via selection of a plurality of dyes, and taking acetylenic bonds or aromatic ring or heterocyclic aromatic as bridges. According to a preparation method, the organic small molecular photoelectric functional material is prepared via Suzuki coupling reaction or Sonogashira coupling reaction. The organic small molecular photoelectric functional material possesses excellent processability, and appropriate energy band structures, and is high in energy conversion efficiency.