A thermal conductive device includes a first conductive plate, a second conductive plate, a plurality of wicks and a fluid. The first conductive plate has a first portion adjacent to edges of the first conductive plate and a second portion far away from the edges. The second conductive plate has a first portion adjacent to edges of the first conductive plate and a second portion far away from the edges. The first portion and the second portion of the first conductive plate are respectively connected to the first portion and the second portion of the second conductive plate to define a chamber. The plurality of wicks are disposed within the chamber. The fluid is disposed within the chamber.