A coaxial connector with all metal shell comprises a metalwork casing in which at least one positioning hole is disposed; an insulator is accepted in the positioning hole; a terminal is accepted in the insulator; a rear receiving room is disposed at the rear end of the casing; a breach is disposed at one flank side of the rear receiving room; an insulating tenon is combined at the inside of the breach of the rear receiving room; the insulating tenon has a plurality of through holes; at least one ground at the rear end of the casing and a lead wire at the rear end of the terminal is extended out of the casing after being respectively passed the through holes.