A slim heat-dissipation module is provided. The slim heat-dissipation module includes a first plate, a second plate, a first porous structure, a second porous structure, a first fluid, and a second fluid. The second plate is combined with the first plate to form a first type chamber and a second type chamber, wherein the first type chamber and the second type chamber are sealed and independent, respectively. The first porous structure is disposed in the first type chamber. The second porous structure is disposed in the second type chamber. The first fluid is disposed in the first type chamber. The second fluid is disposed in the second type chamber.