The invention discloses a carbon conduit calibrator structure. The carbon conduit calibrator structure comprises intake pipes; two intake pipes are provided, and are connected through a connecting pipe; the connecting pipe is arranged on the two intake pipes near one end surfaces; a gradual change pipe is arranged on the two intake pipes near the other end surfaces, and is communicated with the two intake pipes; accommodating devices are arranged at one ends, opposite to the connecting pipe, of the two intake pipes; one ends of the accommodating devices extend into the two intake pipes, and the other ends are positioned in a buffer; the accommodating devices are fixedly connected with the two intake pipes and the buffer; smoke discharge machines are arranged on the side surface of the buffer; and two smoke discharge machines are provided. The carbon conduit calibrator structure can effectively prevent outward overflow of gas, meanwhile, relieves the volatilization speed of the gas to a certain extent, can discharge mist liquid through the smoke discharge machines, meanwhile, can preferably observe the mist liquid, can achieves a certain sealing effect, is excellent in tight connection, and enhances the calibration precision.