Wearable device and controlling method thereof, and system for controlling smart home

A wearable device, wherein, the wearable device comprises:

• a hand gesture identifying module, a wirelessly connecting module and an appliance configuring module;
• the hand gesture identifying module is for by characteristic data to be identified of a wearer that is collected by a sensor, identifying out a current hand gesture action of the wearer, and sending information of the hand gesture action to the appliance configuring module;
• the appliance configuring module is for according to acquired information of each of household electrical appliances, establishing and saving correspondence relations between controlling commands of each of the household electrical appliances and corresponding hand gesture actions;
• and, for upon receiving the information of the hand gesture action sent by the hand gesture identifying module, looking up the household electrical appliance and the controlling command that match the hand gesture action by using the saved correspondence relations, generating a controlling message according to the matched household electrical appliance and controlling command, and sending the generated controlling message to the wirelessly connecting module;
• and
• the wirelessly connecting module is for receiving the controlling message that is sent by the appliance configuring module and wirelessly sending the controlling message to a smart home controlling server, so that the smart home controlling server controls the condition of the household electrical appliance according to the controlling message.