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This utility model relates to the field of IoT intelligent control technology, and in particular to a display control circuit applied to a smart cloud box device. It includes a CPU module, a WIFI / Bluetooth module, a display module, an audio codec module, an audio amplifier module, a transceiver module, a power supply module, and a step-down module. The WIFI / Bluetooth module, display module, audio codec module, audio amplifier module, transceiver module, and step-down module are all electrically connected to the CPU module. The CPU module uses an RK3399 processor chip, the display module uses a TC358772XBG display bridge chip, and the step-down module is also electrically connected to the power supply module. Through the organic combination of multiple modules, this display control circuit comprehensively solves the problem of insufficient display functionality in smart cloud boxes, improving display effect, response speed, and system compatibility.