A heat dissipation assembly (100) is provided. The heat dissipation assembly (100) comprises a chassis (20) of an electronic product, a heat sink (10) having a bottom portion thereof being insert-molded with the chassis (20) so that the heat sink (10) and the chassis (20) are integrally connected together as a single piece, a base (30) secured to the chassis (20) and having a top surface (32) thermally connecting with a heat generating electronic unit of the electronic product and a bottom surface (34) thermally connecting with the chassis (20), a fan (40) used for cooling the heat sink (10), and a heat pipe (50) having an evaporator section (52) connected with the base (30) and a condenser section (54) connected with the heat sink (10).