The invention discloses a method and a system for life cycle management of a software upgrade package of an acquisition terminal, and belongs to the technical field of an electric information acquisition system. The method of the invention comprises the following steps: according to the software to be upgraded by the acquisition terminal, a software upgrading request is maded; according to the software upgrading request, a software upgrading package and a prototype are provided in batches; the software upgrading package is subjected to full performance test and a qualified report is issued; the application for software package filing is put forward according to the qualification report, the software upgrade package filing is compared with the software package and prototype, and the software upgrade package is recorded after the filing is qualified; the filed software upgrade package is encrypted and the filing eligible message is released; the software upgrade request is put forward and the software package record number is submitted, the upgrade package is downloaded according to the software package record number and is decrypted, and then remote upgrade is performed on the software that needs to be upgraded by the acquisition terminal according to the upgrade scheme. The invention uses encryption technology and filing to ensure the safety and effectiveness of the remote upgrading package of the collecting terminal.