The utility model relates to a technology improvement system for production of praziquantel. The technology improvement system comprises a reaction tank, feeding pipes, an electrodialysis pool, an electrodialysis device and discharge pipes, wherein the electrodialysis device comprises an inverter power supply, an anode and a cathode, as well as a plurality of groups of paired positive ion membranes and negative ion membranes which are uniformly distributed at intervals; the electrodialysis pool is divided into a plurality of areas; a plurality of outlets are formed in the feeding pipes and correspond to the areas at intervals. The technology improvement system adopts the electrodialysis device to perform electrodialysis on alkali liquor generated in the process of producing praziquantel, and can recover a 99% sodium hydroxide solution through the discharge pipes, the recovered sodium hydroxide solution can be used for industrial production of praziquantel in a circulating way, and pollution to the environment is reduced.