A heat dissipation device includes a base (10) for thermally engaging with an electronic device and a plurality of fins (320) arranged on the base (10). A heat pipe (52) thermally connects the fins (320) and the base (10) for transferring heat from the base (10) to the fins (320). The heat pipe (52) comprises an evaporation section (521) sandwiched between the base (10) and the fins (320), two condensation sections (525, 526) parallel to the evaporation section (521) and thermally engaging with the fins (320), and two connecting sections (527, 528) interconnecting corresponding condensation sections (525, 526) and the evaporation section (521). The connecting sections (527, 528) form an included angle therebetween. The condensation sections (525, 526) are spaced from and extend toward each other.