The invention provides a switched reluctance motor thermal analysis method based on variable-density symmetric meshing. According to the method, by adopting the variable-density symmetric meshing method to determine meshing density of motor windings, stator teeth and rotor teeth, thermal analysis precision can be effectively improved; and moreover, when a stator in-groove model is established, thethermal influence among different windings is considered, the influence of an insulation material on thermal transmission is considered at the same time, in-groove air gaps are separately equivalentto one part, therefore, the accuracy of the model is improved, and accordingly thermal analysis precision is improved. As a result, beneficial guidance can be provided for improving structural designof a motor according to the finite element thermal analysis result.