IT Tech is developing a big data-based AI system for detecting vital signs in livestock, such as estrus, heat illness, and cow rollover. The AI CDS (Cattle Abnormal Detection System) uses thermal imaging and general cameras to identify overturning, heat illness, and estrus by analyzing behavioral patterns and temperature changes in livestock. This big data-driven AI CDS continuously monitors livestock for estrus and disease in real time, functioning like a human observer 24/7. By taking appropriate actions at an early stage, it helps increase farm profits. AI CDS is pioneering a new paradigm for livestock detection by integrating artificial intelligence from the 4th industrial revolution with the traditional livestock industry.