The invention discloses a tetraisopropyl titanate electrochemical synthesis method and relates to the technical field of chemical synthesis. The tetraisopropyl titanate electrochemical synthesis method comprises the specific steps of S1, manufacturing an anode and a cathode by adopting titanium; S2, adding methanol and isopropanol and conducting mixing evenly; S3, adding electrolyte to improving the electric conductivity; S4, conducting an electrolytic reaction under nitrogen protection; S5, conducting pressure reduction and extraction filtration; S6, adding an extraction agent for extraction; and S7, conducting reduced pressure distillation. According to the method, in a reaction system, a synthetic product is easy to separate and refine and high in purity, the number of by-products is little, and the environmental pollution can be substantially reduced. In the synthesis process, reaction of reactants is conducted at normal temperature and normal pressure. The reaction conditions are mild. Energy consumption is low. The manufacturing cost of equipment is low. The method has the advantages that the reaction yield is high, and the purity of products is high.