The utility model discloses a coaxial cable connector. It includes body, plastic slab and copper connecting pipe, the copper connecting pipe install on coaxial cable's interior sinle silk, the body install on coaxial cable's outer sinle silk, the copper connecting pipe arrange the inside of body in, the both ends of body are equipped with the sponge filler, the plastic slab install the upper end at the body, body, sponge filler and plastic slab constitute a confined space. The beneficial effects of the utility model are that: two coaxial cable's stable connection is guaranteed to interior sinle silk and outer sinle silk that can effectual fixed coaxial cable, with the connection position of coaxial cable effectual sealed, prevent that external environment from leading to the fact certain influence to this connection position, improved the fail safe nature of this connector, be favorable to improving coaxial cable's life simultaneously.