Abstract: Taking the SRVS-50G vacuum sintering furnace as the research object, based on the Fluent finite element analysis software, the temperature field and flow field of the sintered NdFeB vacuum sintering furnace were simulated and analyzed during the gas quenching and cooling process. This article studies the effects of cooling inlet wind speed and outlet quantity on the cooling uniformity and cooling efficiency of vacuum sintering furnace. The results show that increasing the inlet air speed can improve cooling efficiency, but the cooling uniformity is reduced. The appropriate inlet wind speed should be selected according to the specific product temperature uniformity requirements. In terms of the number of air outlets, the number of air outlets is 4, which is the best in terms of cooling uniformity and cooling efficiency.