A male connector (1) includes a luer portion (10) connected to the upstream end of a tube (8) used in enteral feeding, and a lock portion (20) that is removably attached to the luer portion. The luer portion (10) includes a tubular male luer (11) in which a channel (17) in communication with the tube (8) is formed. The lock portion (20) has a hollow tubular shape and is open at two ends, and includes female threading (21) that opposes the male luer on the inner circumferential face of the lock portion (20). The male luer (11) is inserted into the lock portion (20). Rotation prevention mechanisms (16, 26) that engage with one another are provided on the luer portion (10) and the lock portion (20) such that the lock portion (20) does not rotate relative to the luer portion (10).
