The utility model relates to a high-temperature condensing apparatus, in particular to a condenser pipe. An air path pipe is arranged in the condenser pipe; a water inlet, a water outlet, an air inlet and an air outlet are respectively formed in the condenser pipe; two ends of the air path pipe are respectively communicated with the air inlet and the air outlet; the air path pipe is a serpentine pipe; the water outlet in the condenser pipe is higher than the air inlet; condensate water enters from the water inlet and flows out from the water outlet; and the air path pipe is completely immersed into the condensate water. According to the condenser pipe provided by the utility model, the serpentine pipe is adopted as the air path pipe arranged in the condenser pipe; and compared with a spherical pipe, the serpentine pipe is longer in condensing path, larger in cooled area, more complete in liquification, and better in condensation effect. The water outlet of the condensate water is formed in the upper end of the condenser pipe, so that the condition that the serpentine air path pipe is completely immersed into the condensate water can be ensured; and cracking of the air inlet caused by high temperature is avoided.