The present invention provides a labeling method for a blu-ray disc, which includes following steps: an initial radius is selected on a blank area of the blu-ray disc, and a pattern is determined; an initial physical sector number is calculated using the initial radius, and the pattern is transformed into a description data; according to the initial physical sector number and a size of the description data, a sequential recorded region of the blu-ray disc is divided into at least two sequential recorded regions, and information of the at least two sequential recorded regions are updated in a table of content, wherein an initial position of one of the sequential recorded regions is the initial physical sector number, and a length of the one of the sequential recorded regions is the size of the description data; the description data is written from the initial physical sector number.