Abstract: The magnetic drive pump has the advantages of zero leakage, simple structure, low cost and easy maintenance which is used widely in recent years. By means of the test research and structural design under the nuclear energy application condition, a new circulation pump was developed which meet the requirements of high temperature and pressure and realized zero leakage. Its application in new type reactor was analyzed and researched. Under certain conditions, the magnetic drive pump can replace the most current pumps which are complex, costly and difficult for repair.