The invention discloses a network data package parallel processing method and device, relates to the technical field of data processing, and mainly aims at improving the parallel processing efficiency of network data packages. The main technical scheme is that the method comprises the following steps of: setting that the length of a single variable in a read-write variable part is not greater than the word length of a central processing unit CPU in a session data structural table item corresponding to a network session; when at least two CPU cores receive different network data packages in a same network session, obtaining the session data structural table item corresponding to the network session by the CPU cores; and carrying out atomic operation modification on the read-write variable part in the session data structural table item according to the execution condition of the network data packages in the CPU cores. The method and device disclosed by the invention are mainly used for carrying out parallel processing on the network data packages.