A vacuum device includes a vacuum generator, a guiding pipe, a connection member, and a stand. One end of the guiding pipe is connected to the vacuum generator. One end of the connection member is connected to the other end of the guiding pipe. The other end of the connection member is connected to the stand. The stand includes a top surface, a first sidewall connected to the top surface, and a pressing portion extending outward from the first sidewall. The connection member is supported by the top surface. The stand defines a first hole and a second hole communicating with the first hole. The first hole runs through the top surface and meets the connection member and the guiding pipe. The second hole runs through the first sidewall and the pressing portion.