TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): A condensation reaction of bromothiophene compound of formula (A) and bromothiophene-carbaldehyde compound of formula (B) is carried out with malonic dinitrile in presence of catalyst or solvent, or coupling reaction of compound (A) and compound (B) is carried out with thiophene compound of formula (C) in presence of catalyst or solvent, to obtain a product. Then, Stille coupling reaction of the product obtained from condensation reaction is carried out with compound (C) in presence of catalyst or solvent or a condensation reaction of the product obtained from Stille coupling reaction is carried out with malonic dinitrile, to obtain a thiophene-containing organic photoelectric material (I). Preferred Process: The method further involves washing the products obtained from the respective condensation reaction of compound (A) and compound (B) with malonic dinitrile using saturated aqueous sodium chloride solution, extracting and drying, collecting and distilling the filtrate after suction filtration, and carrying out chromatographic separation by silica gel column to obtain purified products, or adding potassium fluoride solution to the products obtained from the Stille coupling reaction, stirring for several minutes, and adding saturated aqueous sodium chloride solution, extracting and drying, collecting and distilling the filtrate after suction filtration, precipitating twice using n-hexane and ethanol, and carrying out chromatographic separation of the filtered crude products by silica gel column to obtain purified products. Preferred Component: The catalyst in condensation reaction is pyridine or triethylamine, and the solvent is ethanol, methanol, dichloromethane, trichloromethane, tetrahydrofuran, ethyl acetate, dimethylformamide (DMF), toluene or acetone. The catalyst in Stille coupling reaction is organic palladium catalyst, and the solvent is tetrahydrofuran, dichloromethane, dimethoxyethane, benzene or toluene. Preferred Definitions:    R1,R2=6C linear alkyl;    R3,R4=H;and    m,n,p=0 or 1.