A portable device having a heat dissipation apparatus that comprises: at least two heat sinks (1, 2), which are connected to each other by a heat conductive tube; a centrifugal fan fixed onto one of the at least two heat sinks (1, 2), wherein the centrifugal fan has an inlet vent, and a first outlet vent and a second outlet vent, and discharging directions of the first outlet vent and the second outlet vent are opposite to each other and are both perpendicular to an axial direction of the fan; a detachable shield plate disposed at each of the first and second outlet vents (421, 422), a respective one of the first and second outlet vents (421, 422) discharges an airflow outside when a respective one of the shield plates is drawn out; a first guide fin group which is provided corresponding to the first outlet vent of the centrifugal fan and configured to guide a discharge flow from the first outlet vent, and a second guide fin group which is provided corresponding to the second outlet vent of the centrifugal fan and configured to guide a discharge flow from the second outlet vent, the first guide fin group and the second guide fin group are integrated with the heat sink onto which the centrifugal fan is fixed, and the first guide fin group and the second guide fin group are respectively positioned at opposite ends of the heat sink onto which the centrifugal fan is fixed; wherein the portable device comprises at least one processor and a lithium ion battery which needs to be kept in a certain environmental temperature so that it can be operated properly, wherein heat sinks of the heat dissipation apparatus, except the one onto which the centrifugal fan is fixed, are affixed to the at least one processor, so as to obtain heat generated by the at least one processor when the portable device is in operation; and one of the first and second outlet vents (421, 422) of the centrifugal fan of the heat dissipation apparatus is directly opposite the lithium ion battery and provides the lithium ion battery with heat after the corresponding shield plate is removed in a low temperature environment. at least two heat sinks (1, 2), which are connected to each other by a heat conductive tube; a centrifugal fan fixed onto one of the at least two heat sinks (1, 2), wherein the centrifugal fan has an inlet vent, and a first outlet vent and a second outlet vent, and discharging directions of the first outlet vent and the second outlet vent are opposite to each other and are both perpendicular to an axial direction of the fan; a detachable shield plate disposed at each of the first and second outlet vents (421, 422), a respective one of the first and second outlet vents (421, 422) discharges an airflow outside when a respective one of the shield plates is drawn out; a first guide fin group which is provided corresponding to the first outlet vent of the centrifugal fan and configured to guide a discharge flow from the first outlet vent, and a second guide fin group which is provided corresponding to the second outlet vent of the centrifugal fan and configured to guide a discharge flow from the second outlet vent, the first guide fin group and the second guide fin group are integrated with the heat sink onto which the centrifugal fan is fixed, and the first guide fin group and the second guide fin group are respectively positioned at opposite ends of the heat sink onto which the centrifugal fan is fixed; wherein the portable device comprises at least one processor and a lithium ion battery which needs to be kept in a certain environmental temperature so that it can be operated properly, wherein heat sinks of the heat dissipation apparatus, except the one onto which the centrifugal fan is fixed, are affixed to the at least one processor, so as to obtain heat generated by the at least one processor when the portable device is in operation; and one of the first and second outlet vents (421, 422) of the centrifugal fan of the heat dissipation apparatus is directly opposite the lithium ion battery and provides the lithium ion battery with heat after the corresponding shield plate is removed in a low temperature environment.