A liquid discharge device may be provided with a discharge head comprising a nozzle for discharging liquid, a first member communicating with the discharge head, and a second member capable of being connected to the first member. A liquid path from a liquid supply source to the discharge head via the second member and the first member is formed when the second member is in a connected state with the first member. One of the first member and the second member may comprise an insertion hole. In s case where the other of the first member and the second member is inserted into the insertion hole by moving the first member and/or the second member in a predetermined direction, the second member may be connected with the first member. The liquid discharge device may be provided with a first sealing member that seals between the first member and the second member by being compressed in the predetermined direction when the second member is in the connected state with the first member, and a second sealing member that seals between the first member and the second member by being compressed in a direction which is perpendicular to the predetermined direction when the second member is in the connected state with the first member.