The invention provides a graphite flake. The graphite flake structurally comprises an insulating layer, a graphite layer compounded on the insulating layer, a metal shield layer compounded on the graphite layer as well as a thermally-conductive adhesive layer compounded on the metal shield layer. The graphite flake is characterized in that by setting a specific structure of the insulating layer, the graphite layer, the metal shield layer and the thermally-conductive adhesive layer, the prepared graphite flake can continuously and efficiently produce a graphite heat dissipating material which has the thickness of 10 to 100mu m, the frequency of 10MHZ to 40GHZ and ultralow thermal resistance and can realize a shield effect of 70db or above; application range of the graphite material is greatly widened and an added value of the graphite material is greatly improved. Meanwhile, by designing a formula of the thermally-conductive adhesive layer, vertical heat of the material is greatly reduced and the competitiveness of a product is improved on the premise of ensuring effective shield and conduction of electromagnetic waves.