Abstract: The present invention relates to a method for adaptively tracking a subject. The method includes the steps of: comparing a first block which indicates a region corresponding to a specific subject in a first frame with at least one block included in a second frame and determining a specific block among at least one block in the second frame which has the highest degree of similarity to the first block as a second block which indicates a region corresponding to the specific subject in the second frame; and detecting the specific subject from at least part of the whole region in the second frame by using a subject detection technology, if the degree of similarity between the first block and the second block is less than a predetermined threshold value, and resetting the second block in the second frame based on a region corresponding to the detected specific subject.