Non-linear finite element code MSC.Marc was utilized to analysis the field of stress of the Al_2O_3 joints brazed with composite filler materials. The properties of the filler materials were defined by using the mixing law, method of Mori-Tanaka and theory of Eshelby to ensure the accuracy and reliability of results of finite element method (FEM). The results show stress in brazed beam is higher than that in base material. The maximal stress can be found in the interface of joint. And the experimental results show that the shear strength of joints increases from 93.75MPa (Al_2O_3p 0vol.%) to 135.32MPa(Al_2O_3p 15vol.%) when composition of titanium is 3wt% in the filler metal. Non-linear finite element code MSC.Marc was ​​utilized to analyze the field of stress of the Al_2O_3 joints brazed with composite filler materials. The properties of the filler materials were defined by using the mixing law, method of Mori-Tanaka and theory of Eshelby to ensure the accuracy and reliability of results of finite element method (FEM). The results show stress in brazed beam is higher than that in base material. The maximal stress can be found in the interface of joint. And the experimental results show that the shear strength of joints increases from 93.75MPa (Al_2O_3p 0vol.%) to 135.32MPa (Al_2O_3p 15vol.%) when composition of titanium is 3wt% in the filler metal.