The invention discloses an automatic circulating glaze spraying system and an application method thereof. The automatic circulating glaze spraying system comprises a circulating conveying line. The circulating conveying line comprises a conveying line base and a circumferential rotating device. The conveying line base comprises a feeding section, a cleaning section, an automatic glaze spraying section and a drying section. The output end of the feeding section is connected with the input end of the cleaning section. The input end of the automatic glaze spraying section is connected with the output end of the cleaning section. The input end of the drying section is connected with the output end of the automatic glaze spraying section. The output end of the drying section is connected with the input end of the feeding section. The circumferential rotating device is movably mounted on the conveying line base. By adopting the automatic circulating glaze spraying system, assembly line operation of mechanical automation is realized; the labor intensity of workers is greatly reduced; the manner that green bodies rotate at constant speed and a glaze spraying head conducts fixed-point glazespraying accordingly is adopted; thus, the glaze surfaces of the green bodies are more uniform, and the stability and consistency of products are improved.