Provided are a method and device for recording a system log. The method includes: acquiring the sequence information of a virtual log file in a system, wherein the virtual log file is a preset file for the system, and the virtual log file includes the sequence information, and the sequence information is used for determining a position of a log file which is written last time by the system; and determining the log file which is written last time by the system according to the sequence information of the virtual log file, and writing the log in the determined log file. By the disclosure, the sequence of system log recording is not influenced by changes in the system time.