The present invention relates to a heat sink having juxtaposed heat pipes and a method for manufacturing the same. The heat sink includes a base, a plurality of heat pipes and a pair of side strips. The base has a surface on which an open trough and an insertion trough on both sides of the open trough are provided. Each heat pipe has an evaporating section. The evaporating sections are juxtaposed in the open trough and adhered to each other. Each evaporating section has a planar surface. The side strips are fixed into the insertion troughs and protrude from the surface of the base. The planar surface of each evaporating section and the outer surface of each side strip are coplanar. By this structure, the thermal contact surface between the heat pipes and electronic heat-generating sources is increased, so that the heat-dissipating efficiency of the heat sink is improved.