Abstract: The present disclosure provides a packet modification method and apparatus, a computer device, and a storage medium. The method includes: dividing a field to be modified that is related to packet encapsulation information into M containers; performing instruction extraction on a very long instruction word executing a modification command, to obtain N groups of initial instructions, where 2?N?M; processing the N groups of initial instructions to obtain N groups of source operands and N groups of modification field configuration information; determining, according to the N groups of modification field configuration information, N containers matched with the N groups of source operands, respectively; and modifying, according to the N groups of source operands, the N matched containers, respectively.