Abstract: By means of finite element numerical simulation,when using the Ni based brazing filler metal,the shear stress distribution in the brazing fillet of TiC ceramic/iron and the effects of joining temperature on the maximum value of the shear stress were researched.The result shows:the shear stress always centres on the brazing fillet tip of TiC ceramic/iron;with the joining temperature increasing,the maximum value of the shear stress in the brazing fillet increases and the strength of the joint decreases.