A solid-state drive device is provided. The solid-state drive device includes a housing, a first circuit board, and a second circuit board. The housing includes a first side and a second side. The first side is opposite to the second side. At least one first ventilation hole is formed on the first side. At least one second ventilation hole is formed on the second side. The first circuit board is disposed in the housing. The second circuit board is disposed in the housing. The second circuit board is coupled to the first circuit board. A gap is formed between the first circuit board and the second circuit board. The first ventilation hole and the second ventilation hole correspond to the gap.