A medical clip cartridge (1) for connecting a medical clip (22) to a line member (25) having a connection part (31) on a distal part thereof, comprising an insertion port (2) for inserting a line member (25), an insertion path (3) extending distally from the insertion port (2), and a storing part (4) for storing a clip (22), that is connected to a distal end of the insertion path (3), wherein the insertion path (3) has a protrusion (5) projecting from an inner surface of the insertion path, and the protrusion (5) has a part whose top surface widens toward a distal end thereof and whose height from the inner surface of the insertion path increases toward the distal end.