The present invention relates to the technical field of smart homes. Disclosed is a smart home area control system based on wireless network, comprising: digital terminal; a plurality of control modules for controlling various home appliances; and a control router for establishing a wireless network. The digital terminal and the control module are connected to the wireless network. The control router calculates, on the basis of a signal receiving delay of the digital terminal and a signal receiving delay of the control module, a position of the digital terminal; and controls, on the basis of the relationship between the position of the digital terminal and a position of the control module, a switch of the home appliance. When compared to the prior art, the smart home area control system based on wireless network can use a data transmission delay between a digital terminal and a control router to calculate a position of the digital terminal. A user only needs to carry the digital terminal. The control router can then monitor an indoor position of the user and control, on the basis of the position of the user, a switch of a relevant home appliance. The invention provides a high degree of intelligence and good user experience.
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