The disclosure discloses an apparatus for displaying a computer health index comprising: a memory having instructions stored thereon; a processor to execute the instructions to perform operations comprising: calculating at least one health sub-index, and calculating the computer health index based on the at least one health sub-index, wherein each health sub-index is associated with at least one computer state, and each health sub-index reflects a health degree of an associated computer state; and performing simple index display to display a small icon reflecting a value of the computer health index in a simple index display area.