A hemostasis valve device comprising: a connector comprising 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, wherein the connector comprises 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, wherein the first pipe comprises a hole which allows the first channel to communicate with the outside, the hemostasis valve device further comprising an opening and closing portion disposed at the first pipe and configured to selectively open or close the hole, wherein the hole is disposed between the first end and the first point, wherein the connector comprises a deaeration pipe including the hole, wherein the opening and closing portion comprises: a sealing member disposed on the deaeration pipe and configured to cover the hole; and a first member disposed above the sealing member and coupled with the deaeration pipe to be vertically movable, wherein the first member comprises a tube which protrudes downward and communicates with the outside, wherein the sealing member comprises an incised portion, wherein the tube communicates with the hole while passing through the incised portion, wherein the opening and closing portion further comprises: a second member which is coupled with the deaeration pipe and includes a hole through which the tube passes; and an elastic member, wherein the first member is coupled with the second member to be vertically movable, wherein the first member is disposed above the second member, wherein the elastic member is disposed between the first member and the second member, characterized in that the first member comprises a top surface and a side surface, and wherein the first member further comprises a connection hole which connects the side surface with the tube. a connector comprising 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, wherein the connector comprises 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, wherein the first pipe comprises a hole which allows the first channel to communicate with the outside, the hemostasis valve device further comprising an opening and closing portion disposed at the first pipe and configured to selectively open or close the hole, wherein the hole is disposed between the first end and the first point, wherein the connector comprises a deaeration pipe including the hole, wherein the opening and closing portion comprises: a sealing member disposed on the deaeration pipe and configured to cover the hole; and a first member disposed above the sealing member and coupled with the deaeration pipe to be vertically movable, wherein the first member comprises a tube which protrudes downward and communicates with the outside, wherein the sealing member comprises an incised portion, wherein the tube communicates with the hole while passing through the incised portion, wherein the opening and closing portion further comprises: a second member which is coupled with the deaeration pipe and includes a hole through which the tube passes; and an elastic member, wherein the first member is coupled with the second member to be vertically movable, wherein the first member is disposed above the second member, wherein the elastic member is disposed between the first member and the second member, characterized in that the first member comprises a top surface and a side surface, and wherein the first member further comprises a connection hole which connects the side surface with the tube. a sealing member disposed on the deaeration pipe and configured to cover the hole; and a first member disposed above the sealing member and coupled with the deaeration pipe to be vertically movable, wherein the first member comprises a tube which protrudes downward and communicates with the outside, wherein the sealing member comprises an incised portion, wherein the tube communicates with the hole while passing through the incised portion, wherein the opening and closing portion further comprises: a second member which is coupled with the deaeration pipe and includes a hole through which the tube passes; and an elastic member, wherein the first member is coupled with the second member to be vertically movable, wherein the first member is disposed above the second member, wherein the elastic member is disposed between the first member and the second member, characterized in that the first member comprises a top surface and a side surface, and wherein the first member further comprises a connection hole which connects the side surface with the tube. a second member which is coupled with the deaeration pipe and includes a hole through which the tube passes; and an elastic member, wherein the first member is coupled with the second member to be vertically movable, wherein the first member is disposed above the second member, wherein the elastic member is disposed between the first member and the second member, characterized in that the first member comprises a top surface and a side surface, and wherein the first member further comprises a connection hole which connects the side surface with the tube.