The invention discloses an outdoor waterproof connector box, which comprises a cable waterproof assembly, a fixing member, a wire inlet pedestal, a wiring base and a shell, wherein the wire inlet pedestal is provided with at least one waterproof hole for being inserted by the cable waterproof assembly, the wiring base is connected with the wire inlet pedestal, and the shell is sleeved outside the wire inlet pedestal and the wiring base, and the shell is hermetically connected with the wire inlet pedestal; and the fixing member is inserted from a side surface of the wire inlet pedestal to fix the cable waterproof assembly in the corresponding waterproof hole. The cable inlet and outlet of the invention are fast to seal, and the connector box has an excellent overall waterproof performance.