The present invention provides a stack-type vertical heat dissipation device comprising an evaporator unit and a condenser unit. The evaporator unit has a side configured for direct or indirect contact with, and thereby receiving heat from, a high-temperature device in order for the heat to convert a heat conduction medium inside the evaporator unit into a gaseous state. The condenser unit is stacked on a top side of a housing of the evaporator unit, and is provided therein with a flow channel that is in communication with the evaporator unit and allows passage of the heat conduction medium so that the heat conduction medium is able to return to the evaporator unit under a force of gravity after condensing from the gaseous state into a liquid state and thereby complete a thermal cycle.