The invention provides a pyrrolidone oxidation reaction device and method. The pyrrolidone oxidation reaction device comprises continuous membrane drying equipment provided with a material inlet and a material outlet and continuous reaction equipment provided with a material inlet and a product outlet, wherein the material inlet and the material outlet are connected through an oxidant conveying pipeline. An oxidant is dried by the adoption of the continuous membrane drying equipment, and then the dried oxidant is conveyed to the continuous reaction equipment through the oxidant conveying pipeline and is directly used for an oxidation reaction. Due to the fact that the continuous membrane drying equipment can dry the oxidant continuously, the limit of the batched drying is avoided, and the drying efficiency is improved. The continuous membrane drying technology is combined with the continuous reaction technology, the risks brought by temporary storage/transfer of dried materials such as peroxide are avoided, the oxidant is directly used for the reaction after being continuously dried, and meanwhile the reaction time is shortened greatly; and the equipment is easy and convenient to operate, continuous feeding and continuous product discharging are achieved, the labor intensity of working is low, and the safety is high.