In order to study the influence of thermal effect on the static characteristics of highspeed conical hybrid bearing,the Reynolds equation,energy equation,deep cavity flow balance equation and related control equation of conical hybrid bearing with deep and shallow cavity structure were established.Finite element method and finite difference method were used to discrete the related equations,the positive coefficient rule was applied to deal with the discrete coefficients of the coefficients and constant terms of the energy equation,the oil film pressure distribution and temperature distribution were obtained,and the static parameters of the highspeed conical hybrid bearing were calculated.The influence of thermal effect on static characteristics of highspeed conical hybrid bearing was analyzed.The results show that the thermal effect causes the decrease of oil film pressure of of the highspeed conical hybrid bearing,and the greater the rotating speed is,the greater the pressure reduction is and the more obvious the oil film temperature rise is.After taking into account the thermal effect,the viscosity of lubricating oil is decreased,resulting in the increase of the angle of displacement of the highspeed conical hybrid bearing,the decrease of the axial and radial bearing capacity,the increase the end discharge,the decrease of the friction,and the change is more significant at higher rotating speed.