A heat dissipation device includes a fan (200), a first wire collection structure (280) and a second wire collection structure (290). The fan (200) includes a frame (210) and an impeller (240) disposed in the frame (210). The first wire collection structure (280) is formed on the frame (210) to collect wires (270) of the fan (200). The second wire collection structure (290) is formed on the frame (210) and configured for collecting wires (460) of another component other than the fan (200).