The paper proposes a new approach of beam combination, in which the feasibility of volume Bragg gratings as the laser beam guiding device was analyzed. Based on Kogelnik's theory of coupled waves, the wavelength selectivity and angular selectivity of volume Bragg gratings were emphatically discussed. The experimental fabricating process was reported in detail. Two different wavelength lasers beam combination and two same wavelength lasers beam combination were performed. As a result, the feasibility of Bragg grating for beam combination was verified. In order to be used conveniently in practical operation, the special angle is taken into account. The optical path will be improved and the theoretic calculation also be simplified. The beam combination efficiency will be greatly improved.