Research purposes ： The choice of minimum curve radius is one of the main technical standards of heavy haul railway. Because of high axle load of heavy haul railway，large volume，serious rail wear compared with the conventional railway passenger and freight transportation， the choice of minimum curve radius is directly related to the safety， economy and convenience of maintenance of heavy haul railway. Through research on technical standards， combined with the construction，operational experience and scientific research results of heavy haul railway in our country in recent years，the standard of minimum curve radius selection for heavy haul railway is proposed，which has a strong reference value and guidance for the construction of heavy haul railway in China. Research conclusions:( 1 ) The choice of curve radius should be adapted to local conditions， reasonable selection， which can meet the requirements of the driving speed，and can also adapt to the terrain geological conditions，reduce the investment，to facilitate maintenance and repair. (2 ) The choice of curve radius of heavy haul railway should pay attention to the wheel rail wear，and reduce the maintenance workload of line，to create better conditions for operations. (3 ) The minimum curve radius of heavy haul railway is not less than 1 200 m，not less than 800 m under difficult conditions，and not less than 600 m under the individual condition. (4) The research results can provide a theoretical basis for the research of the heavy haul railway，and provide a reference for the selection of the main technical standards of the heavy haul railway.