The high-concentration pulverized coal burner can stabilize the combustion and significantly reduce NOx emissions，which is a very economical and environmentally friendly combustion technology. Its primary wind speed has a very important impact on the ignition delay in the furnace，the stability of pulverized coal combustion and the NOx emissions. In order to determine the primary wind speed suitable for the new high-concentration coal pre-combustion low-nitrogen burner，and provide guidance for the on-site experiment and actual operation of the burner，ANSYS Fluent software was used to simulate and calculate the influence of primary wind speed on the combustion stability of pulverized coal and NOx emissions. In this paper，a grid-independent test was performed first，and a 25 t/h full-scale pulverized coal industrial boiler was tested to verify the accuracy of the model. The numerical simulation results show that the new high-concentration coal pre-combustion low-nitrogen burner can form two recirculation zones in the pre-combustion chamber and the furnace. The recirculation zone in the pre-combustion chamber ensures stable combustion of pulverized coal，and the recirculation zone in the furnace reduces NOx. When the primary wind speed is too low，the later mixing of primary and secondary air weakens，the combustion of pulverized coal is unstable，and NOx emission increases slightly. Also，when the primary wind speed is too high，the mixing of the secondary air and the pulverized coal is weakened，and the combustion of pulverized coal is unstable，resulting in a significant decrease in the coke conversion rate and a significant increase in NOx emissions. The primary wind speed increases from 17 m/s to 20 m/s，and the NOx concentration in the outlet section increases by about 10%. An appropriate primary wind speed can not only stabilize the ignition and combustion of pulverized coal，but also achieve low NOx emissions. The best primary wind speed of the burner studied is between 14-17 m/s.