A 3D caption display method for harmoniously merging and displaying closed caption with 3D image in a 3D display apparatus, and a 3D display apparatus suitable for implementing the method. When the 3D display apparatus receives image signals of first and second images for implementing 3D image in a stereoscopic scheme, the 3D display apparatus receives closed caption data only for a base view determined from the first and second images. Then, the display apparatus determines the position of a closed caption for an extended view based on the closed caption data for the base view and a certain 3D caption information, and formats caption graphic data for the base view and the extended view to output 3D closed caption in a stereoscopic format.