Grain quality deterioration in steel silos mostly originates from invisible internal temperature differences and hidden hot spots. Traditional manual temperature checking and fixed-point detection methods cannot capture real-time temperature changes inside deep grain layers, leading to delayed risk judgment and untimely ventilation adjustment. Long-term undetected local overheating easily causes grain mildew, insect breeding and storage loss. Professional silo intelligent temperature monitoring solves the blind spot of manual inspection, realizing real-time perception, early warning and precise control of grain pile temperature changes throughout the whole storage cycle.