The invention discloses a smart home wireless sensor network based on multi-sensor data fusion. The smart home wireless sensor network based on multi-sensor data fusion is characterized by comprisingwireless sensor nodes, wireless execution mechanisms and a wireless control centre; the wireless sensor nodes are responsible for data acquisition, processing and communication; the wireless executionmechanisms are used for starting alarm and controlling a circuit switch; and the home wireless control centre is used for processing and forwarding information from the wireless sensor nodes, and providing an interface for connection of the internet, so that remote control is carried out. The multi-sensor data fusion technology in the invention integrates confidence distance calculation, a Bayesian fusion algorithm and a Kalman filter; the nondeterminacy and the inconsistency of multi-sensor fusion are reduced; and the multi-sensor fusion precision is improved.