Abstract: In order to quantitatively analyze change rules of flow stress affected by processing parameters during multi-pass hot compression deformation, and realize the reasonable control on forming process, multi-pass temperature-drop hot compression deformation behavior of 6013 aluminum alloy was studied. Based on experimental data and Kriging method, a model was constructed for describing the deformation behavior. The results show that flow stress is significantly affected by deformation temperature during multi-pass temperature-drop hot compression deformation. With the increase of deformation temperature, the flow stress increases in approximately stair-stepping shape. The hot compression deformation behavior model built based on Kriging method has relatively high prediction accuracy and stability, and it can describe the multi-pass hot compression deformation process very well.