The face detection device detects a human face image in an image. The face detection device includes a face determining unit, a control unit, a display unit, and a receiving unit. The face determining unit performs a face determination process in which the face determining unit determines whether the image includes a human face image indicative of at least a part of a human face. The control unit performs a base process by controlling the face determining unit to perform the face determination process at least one time. The display unit displays a result of the base process. When the receiving unit receives an instruction, the control unit performs an additional process by controlling the face determining unit to perform the face determination process at least one time on the same image with a higher accuracy than the face determination process in the base process.