A connector (100, 200) comprising: a housing (2, 4) in which a receiving passage (25, 45) is formed; a terminal (1, 3) inserted in an insertion direction and mounted in the receiving passage (25, 45); and wherein at least one limiting protrusion (22, 42) is provided on a wall of the receiving passage (25, 45), and configured to be abutted against the terminal (1, 3) so as to retain a portion of the terminal outside the receiving passage when the terminal is pre-inserted into the receiving passage; wherein the limiting protrusion (22, 42) is scraped off by the terminal to allow the terminal to be fully inserted and mounted in the receiving passage; wherein the terminal comprises: a body portion (12, 32); two fixed arms (11, 31) extending upward from two opposite sides of the body portion (12, 32) toward an upper side of the body portion so as to fix a mating terminal inserted from a front end of the terminal between the body portion and the fixed arms; and a crimping portion (15, 35) connected to a rear end of the body portion; and characterized in that thelimiting protrusion (22, 42) is scraped off by the terminal to allow the terminal to be fully inserted and mounted in the receiving passage; and wherein the terminal further comprises: a release arm (13, 33) extending obliquely upward from a bottom wall (14, 34) of the terminal (1, 3) in a direction opposite to the insertion direction, and having a rear end upwardly bent as a drive portion (131, 331) which is depressed by the housing to release the inserted mating terminal when the housing is moved rearward relative to the fully inserted terminal. a housing (2, 4) in which a receiving passage (25, 45) is formed; a terminal (1, 3) inserted in an insertion direction and mounted in the receiving passage (25, 45); and wherein at least one limiting protrusion (22, 42) is provided on a wall of the receiving passage (25, 45), and configured to be abutted against the terminal (1, 3) so as to retain a portion of the terminal outside the receiving passage when the terminal is pre-inserted into the receiving passage; wherein the limiting protrusion (22, 42) is scraped off by the terminal to allow the terminal to be fully inserted and mounted in the receiving passage; wherein the terminal comprises: a body portion (12, 32); two fixed arms (11, 31) extending upward from two opposite sides of the body portion (12, 32) toward an upper side of the body portion so as to fix a mating terminal inserted from a front end of the terminal between the body portion and the fixed arms; and a crimping portion (15, 35) connected to a rear end of the body portion; and characterized in that thelimiting protrusion (22, 42) is scraped off by the terminal to allow the terminal to be fully inserted and mounted in the receiving passage; and wherein the terminal further comprises: a release arm (13, 33) extending obliquely upward from a bottom wall (14, 34) of the terminal (1, 3) in a direction opposite to the insertion direction, and having a rear end upwardly bent as a drive portion (131, 331) which is depressed by the housing to release the inserted mating terminal when the housing is moved rearward relative to the fully inserted terminal.