1. A mura detection method of a display device, comprising: analyzing image information, acquired from a test image displayed by a display panel, to detect a plurality of mura candidate areas; extracting feature information and position information of the mura candidate areas; removing non-mura according to the features of the mura candidate areas; detecting white spot mura and black spot mura on the basis of the feature information of the mura candidate areas; detecting black-and-white spot mura on the basis of the position information of the mura candidate areas; and detecting the white spot mura, the black spot mura, and the black-and-white spot mura as final mura to classify a kind, size, and position of the final mura.