A connector having a one-piece housing includes a metal sleeve and a circuit board. The metal sleeve is open at both ends thereof and the metal sleeve integrally extends along its circumferential direction. A part of the metal sleeve is narrow than other parts and a neck is formed thereon. A tongue is formed protruding from an edge of the circuit board and multiple terminals are printed on at least a surface of the tongue. A part of the circuit board is interference fit in the neck of the metal sleeve, and the tongue is accommodated in the metal sleeve. The tongue is surrounded by the metal sleeve and is spaced apart from an inner wall of the metal sleeve. The tongue is ensured to be separated from electromagnetic interferences by the metal sleeve to ensure efficiency and stability of the signal transmitted in the terminal.