The embodiment of the invention discloses a remote update method and device for support controller programs. The remote update method for support controller programs comprises: comparing program records of a to-be-updated program file with program records of an older version program file, and adding the program records in the to-be-updated program file, which are different from those in the older version program file, to a to-be-updated program set; storing the to-be-updated program set in a buffer area; reading the program records in the to-be-updated program set in the buffer area, and sending to a support controller server for updating, wherein the program records are a group of data recording record types, record lengths, memory addresses, code data and checksum. The technical scheme provided by the embodiment of the invention realizes updating of support controller programs safely and rapidly.