Disclosed is a hemostasis valve device including a connector including a first channel, a holder disposed at a first end of the connector and configured to communicate with the first channel, and a valve portion disposed at a second end of the connector and configured to selectively open or close the first channel. Here, the connector includes a first pipe including the first channel and a second pipe which diverges from a first point of the first pipe and includes a second channel configured to communicate with the first channel. Also, the first pipe includes a hole which allows the first channel to communicate with the outside. Here, the hemostasis valve device further includes an opening and closing portion disposed at the first pipe and configured to selectively open or close the hole. The hole is disposed between the first end and the first point.