Method for Linux VFAT (virtual file allocation table) file system module to support GB18030 character set

The invention relates to a method for a Linux VFAT file system module to support a GB18030 character set. The GB18030 character set is referred to a GB18030-2005 character set and divided into a double-byte zone, a four-byte zone expansion A, a four-byte zone expansion B and a double-byte zone expansion A, and is characterized in that double-byte Chinese characters in the character set all adopt a table look-up manner; Chinese characters in the four-byte zone expansion A and unicode code conversion as well as Chinese characters in the four-byte zone expansion B and UTF (Ucs Transformation Format) code conversion are realized through algorithms. According to the method, system expenses caused by the support of the GB18030-2005 character set are simplified and reduced; a function realizing thought about the GB18030-2005 Chinese character set for processing multi-byte characters and wide-byte characters is provided; and a perfect Chinese character set support scheme is provided for the majority of Linux users, and the usage of the users is more convenient and rapider.