In order to further improve the power density and heat dissipation capacity of the mine-used concentrated winding permanent magnet motor, a new winding cooling structure with cooling water pipe and winding wound parallelly is proposed. Taking a 315 kW concentrated winding permanent magnet motor as an example, a three-dimensional model of the motor is established through reasonable equivalence and assumptions, and the temperature field of the motor is analyzed based on computational fluid dynamics (CFD) method. The effects of different parallel winding methods and different inlet speeds under the same parallel winding method on the heat dissipation of the motor are analyzed, and the optimal heat dissipation method is determined. The simulation analysis shows that the parallel winding of cooling water pipe and winding effectively improves the heat dissipation capacity.