The utility model relates to a TGIC (Triglycidyl Isocyanurate) cyclization reaction device. The TGIC cyclization reaction device comprises a reaction kettle, wherein the reaction kettle is internally provided with double-layer paddle type stirrer, an inner circulation inlet pipe is arranged under the reaction kettle in a connection manner, the inner circulation inlet pipe is provided with a circulation pump in the connection manner, the circulation pump is provided with an inner circulation outlet pipe and a material outlet pipe, the inner circulation outlet pipe is provided with a spray nozzle in the connection manner, the spray nozzle is just opposite to an upper blade of the double-layer paddle type stirrer, and a condenser is arranged above the reaction kettle. The TGIC cyclization reaction device disclosed by the utility model has the beneficial effects that the whole system is in relative sealed operation, the stirring is severe and complete, the reaction has no dead angle, solid material cannot deposit, the high-degree suspension is kept, the reaction obtained rate in the TGIC is increased by more than 10%, and the TGIC cyclization reaction device has a larger industrial application value.