A finite element model of laser bending of cross-stiffened integral panel (CSIP) is established by use of sequential coupling method. The deformation process of CSIP is investigated by analyses of the temperature field and the strain field. Then a varying power scanning strategy is proposed to reduce the undesirable deformation. The results show that not only transverse bending but also longitudinal bending occur when the CSIP is scanned with constant parameters. And the skin near scanning line is sunken to somewhat extent. The analyses suggest that the nonuniform transverse bending and the existence of longitudinal plastic strain lead to the concave of skin and longitudinal bending, respectively. The varying power strategy could reduce the undesirable deformation effectively, which reduces the maximum sinkage of skin and relative bending of free end by 80% and 58%, respectively.