Combining temperature cooking techniques with the packaging of cooked corn, the design of retort pouch for cooked corn is made based on the round structure of the cooking bag, material selection, material thickness, and theoretical shelf-life calculation. According to the packing size of the corn and performance requirements, the four-side sealing pillow type bag structure is designed for the cooking bags with the packaging size of 24.5×12.5 cm in the material of PET15/PA15/PVDC7/CPP50. The shelf life is analyzed and calculated according to the maximal allowable weight for water of cooked corn and the material’s permeability coefficient and thickness. By heat sealing test, the structure of the optimal heat seal parameters are determined as the pressure of 50~100 kPa, temperature of 135~145 ℃ and time duration of 2~3 s.