A head-mounted display and an imaging apparatus for displaying image thereof are provided. The imaging apparatus includes a first display, a second display, and a first focus adjusting apparatus. The first display generates a first sub-image; wherein the first sub-image is located on a first imaging plane, and is then projected to the target system. The second display generates a second sub-image; wherein the second sub-image is located on a second imaging plane, and is then projected to the target system. The first focus adjusting apparatus is in front of the second display, and is used to adjust the position of the second imaging plane. The first imaging surface and a second imaging surface are overlapped or non-overlapped.