A heat dissipating device incorporating heat pipes is disclosed. The heat dissipating device includes a base (10), a plurality of heat-dissipating fins (30) and at least one heat pipe (20). The base defines at least a groove (13) thereon. The heat pipe comprises an evaporating portion (22) received in the groove and a condensing portion (21) extending through the fins. The evaporating portion of the heat pipe is curved so as to increase contact surface between the evaporating portion and the base. The condensing portion of the heat pipe extends perpendicularly away from the base.