A head-mounted display apparatus, which includes an image displaying assembly and an external view monitoring assembly. The image displaying assembly comprises an image display region (211) and is configured to cover, and to provide images to, eyes of a user. The external view monitoring assembly comprises a means (212) for monitoring external images from an environment without moving the image displaying assembly away from the eyes of the user. In the head-mounted display apparatus, the image displaying assembly can be disposed on a connecting member (2) connecting a first earcup (11) and a second earcup (12). The first earcup (11) and the second earcup (12) can be configured to be respectively mounted onto two ears of the user.