Bombers in our army have not been equipped with the Electro-Optic Targeting Systems (EOTS), which cannot observe targets at night and as a result cannot conduct precise bombing with the all-optic targeting systems as their bombing targeting systems, so the EOTS is needed. To solve the problem of multiscale image fusion in the process of implement the EOTS, the purpose of image information fusion has been tried to achieve through the multiscale edge fusion. With the fusion data compression, the influence of noise on the fusion result has been tried to reduce at the same time. Based on the multiscale edge theory, an image fusion method for bombing EOTS is proposed, and the effectiveness of the proposed method is verified by experiment. Results show that the proposed image fusion method based on multiscale edge has robustness against mismatch and noise, and provides a theoretical basis for the realization of the bombing EOTS.