The utility model discloses a furnace body temperature real-time monitoring and intelligent alarm system for a high-temperature smelting furnace, and the system achieves the real-time monitoring of the temperature of the furnace body of the high-temperature smelting furnace through the arrangement of an infrared thermal imaging monitor, a two-core computer shielding cable, a digital optical transceiver transmitting end, an optical fiber, a digital optical transceiver receiving end, and a DCS system. The whole system can realize all-weather real-time monitoring and visual temperature measurement of the temperature of the furnace body of the high-temperature smelting furnace, and two infrared thermal imaging monitors are arranged, so that the temperature of the bottom of the furnace body can be monitored in a full range, the temperature monitoring is more comprehensive, and the accuracy of a measurement result is higher; when the temperature of the furnace body is higher than a set value, the DCS system can realize temperature abnormity alarm, and related workers can simply, safely, intuitively and accurately search and judge the overheating fault of the high-temperature smelting furnace equipment through the DCS system operating platform and quickly take measures to prevent the furnace wall burning-through accident, so that the accident rate is reduced.