The invention discloses a high-pressure steam afterheat recycling device which comprises a closed type shell, a heat exchange plate, upper plates and lower plates, wherein the heat exchange plate is horizontally arranged in the shell; the interior of the shell is separated into an upper space and a lower space; an air inlet hole is formed in one end of the lower space of the shell, and an air outlet hole is formed in the other end of the lower space of the shell; a water inlet hole is formed in the end, where the air outlet hole is formed, of the upper space of the shell; an air exhaust hole is formed in the top of the upper space of the shell; the upper plates are longitudinally connected to the lower surface of the heat exchange plate, and the lower plates are longitudinally connected to the bottom of the shell; the upper plates and the lower plates are arranged in a staggering manner, to form folded channels where air flow passes; openings are formed in the connection ends of the lower plates, and the openings of all the lower plates correspondingly form a straight line; a liquid discharging hole is formed in the bottom of the shell. According to the high-pressure steam afterheat recycling device disclosed by the invention, by the use of latent heat of vaporization of high-pressure steam, fresh water to be heated absorbs the heat and then is boiled to be vaporized, to meet the use standard; and therefore, recycling of high-pressure steam afterheat is realized, the energy utilization rate is increased, and the energy consumption is reduced.