In recent years, owing to the rapid development of science and technology, thermometric technologies have evolved, among which fluorescence thermometric technology has gradually garnered significant attention in academia and industry because of its unique advantages and potential. This paper focuses on the basic principles, latest progress, and innovative application of fluorescence thermometric technology in the design of thermometric clothing to provide reference and inspiration for researchers and engineers in related fields. First, we present the basic principles of fluorescence thermometric technology. Subsequently, we review the latest results achieved using fluorescence thermometric probe preparation technology. In thermometric clothing design, the introduction of fluorescence thermometric technology has enabled new developments of smart wearable devices. By cleverly embedding fluorescent temperature sensors into clothing fabrics, real-time monitoring and recording of human body temperature can be realized. In summary, fluorescence thermometric technology, as a sophisticated thermometric technology, demonstrates significant application potential and value in the field of thermometric clothing. As technological innovations continues to develop, fluorescence thermometric technology is anticipated to be widely used in more fields and thus contributes to the development of human society.