A home control gateway and a gateway control method are provided. The home control gateway includes a gateway management module, a first communication circuit, and a second communication circuit. The gateway management module records registers. The gateway management module sets a value of a first register as a first value when an incoming called-number corresponding to the incoming called-signal received by the first communication circuit via a mobile phone network is one of the pre-stored phone numbers. The gateway management module sets the value of the second register as the first value in response to a connection request received by the second communication circuit via a local network. And, the gateway management module activates a home control function corresponding to the second register when the values of the first register and the second register are both the first value.