The idea of the combined block adjustment of variant satellite remote sensing images was proposed and the combined bundle block adjustment model was constructed. Some key issues were studied, such as construction of observation equation, computation of weight matrix, space intersection with multi-image and the frame of computation process. The validity of the model was confirmed by two experiments. The influences of the image combined form, and distribution, amount and precision of ground control points on the adjustment result were analyzed. At last, the characteristics and prospect of the combined block adjustment were summarized.