The present invention relates to the technical field of smart homes. Disclosed is a smart home system based on Bluetooth positioning, comprising: a digital terminal, a plurality of control modules for controlling various home appliances, and a Bluetooth terminal for establishing a Bluetooth network. The digital terminal and the control module are connected to the Bluetooth network. The Bluetooth terminal 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 system based on Bluetooth positioning provided by the invention can use a data transmission delay between a digital terminal and a Bluetooth terminal to calculate a position of the digital terminal. A user only needs to carry the digital terminal. The Bluetooth terminal 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.