Software updating method for domain controller

The invention relates to a software updating method for a domain controller, software of the domain controller comprises micro-control unit side software and system-on-chip side software, and the software updating method comprises the following steps: responding to a requirement for independently upgrading the micro-control unit side software; upgrading of the software on the micro-control unit side is realized through software programming by using a programming device; and determining a development stage of the domain controller in response to a demand for integrally upgrading the system-on-chip side software and the micro-control unit side software or a demand for independently upgrading the system-on-chip side software, and upgrading the domain controller on the basis of the development stage of the domain controller. And selecting a configuration file reading mode for the domain controller, so that the domain controller can use the read configuration file to carry out flashing so as to realize upgrading o