The utility model relates to a vertical high-efficiency homogeneous soaking reactor for producing polycarbonate, which comprises a cylinder body, a plurality of circles of half pipes are arranged on the inner wall of the cylinder body, a double-stirring-paddle stirrer is arranged in the cylinder body, and the double-stirring-paddle stirrer is communicated with a motor above the cylinder body through a stirrer connector. And the half pipes are arranged on the inner wall of the barrel body at equal intervals or unequal intervals. Compared with an existing reactor, the pre-polymerization reactorhas the advantages that the heat transfer speed is high, the temperature uniformity of materials is rapidly realized, the uniform mixing of the materials is rapidly realized, and the pre-polymerization reaction efficiency is high; Light-component phenol gas generated in the pre-polymerization reaction process can be rapidly discharged, the reaction rate is high, and the degassing property is good;And no leakage of harmful gas is realized through magnetic sealing. Turbulent flow and multidirectional flow are formed around the stainless steel half pipes, and a high heat transfer coefficient isachieved. Uniform mixing of materials is facilitated.