Household electrical appliance control method and system

The invention provides a household electrical appliance control method and system, and is applied to household electrical appliances including a first household electrical appliance. The first household electrical appliance comprises a first master controller and a first wireless communication module which is connected with the first master controller. The control system comprises a second wireless communication module and a first WiFi communication module. The first WiFi communication module is connected with the second wireless communication module through an asynchronous serial interface. The second wireless communication module is wirelessly connected with the first wireless communication module. The first WiFi communication module receives a control instruction inputted by a user through WiFi and performs format conversion on the control instruction and then transmits the control instruction to the second wireless communication module. The second wireless communication module transmits the control instruction to the first wireless communication module and transmits the control instruction to the first master controller through the first wireless communication module so as to control the first household electrical appliance and realize remote control of the household electrical appliances.