The present invention discloses a smart waking device and a smart waking method thereof. The smart waking device comprises: a detection unit, a setting unit, a waking unit and a processing module. The detection unit detects user's motion. The setting unit sets a first predetermined time. The waking unit issues a waking message. The processing module is electrically connected with the detection unit, the setting unit and the wakening unit. Based upon the first predetermined time, the processing module takes a time interval starting from the first predetermined time. While the detection unit detects the user's motion during the time interval, the processing module controls the waking unit to issue the waking message.
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