The invention belongs to the technical field of inorganic catalytic materials and particularly discloses a preparation method of a microporous catalytic material for industrialized copper-doped silicon oxide diesel oil tail gas treatment.According to the preparation method, a copper hydroxide and basic cupric carbonate mixture serves as a template agent, and a copper-doped microporous silicon oxide material is prepared by a sol-gel method.The preparation method includes firstly, dispersing the copper carbonate and the copper hydroxide into a solvent, and performing ultrasonic treatment for 15-30 minutes; secondly, adding a silicon source and an alkaline solution with stirring, continuing stirring reaction at the temperature of 60-100 DEG C for 6-24 hours, and drying a product at the temperature 80-100 DEG C for 3-10 hours; finally, calcinating at the temperature of 300-500 DEG C for 3-10 hours so as to obtain the copper-doped microporous material.The preparation method has the advantages that the doped microporous silicon oxide catalytic material is synthesized by one step, simplicity in operation, high repeatability, low raw material price and no environmental pollution are achieved, industrial production can be achieved, and the prepared microporous catalytic material can be used for catalytic treatment of diesel engine large-displacement tail gas (NOx).