A method for recognizing a gesture adopted by an electronic device to recognize a gesture of at least a hand. In the method, a hand image of the hand is captured and the hand image includes a hand region. A geometric center of the hand region is calculated. At least a concentric circle is disposed on the hand region with the geometric center as the center of the concentric circles. A number of intersection points of each concentric circle and the hand region is calculated respectively to determine a feature vector of the gesture. According to the feature vector, a hand recognition is performed to recognize the gesture of the hand.