The invention discloses a method for achieving loading of a single ELF file in multiple operating systems. According to the method, a plurality of ELF files and loading program ELF files of one operating system are converted into one single ELF file which can be burnt into a FLASH in one time and loaded into an inner memory from the FLASH in one time so that when a loading program selects an operating system to be loaded, it is not required to read the operating system from the FLASH, and in other words, FLASH drive is not required, and therefore the volume of the loading program can be decreased to the maximum extent, and the probability of unavailable loading of any operating system due to errors in the FLASH area where the loading program is positioned is decreased. The method for achieving loading of the single ELF file in the multiple operating systems can be applied to a complex environment for achieving multiple operating systems, in particular to the environment where bad block or bit reversal is likely to happen to the FLASH.