In this study，energy dispersive X-ray fluorescence spectroscopy and a colorimeter were used to test and analyze the composition and chroma of the body glaze of the Ming Dynasty white glaze ceramic tile samples from Yaoli kiln in Jingdezhen，and to explore their composition，color, and raw material formula. The results show that the overall characteristics of the body composition of the white glazed ceramic tiles in the kiln are similar，with the typical characteristics of the Southern “high silicon and low aluminum” ceramic body. The average content of Al₂O₃ is about 21.4%，the average content of SiO₂ is 71.2%，the average content of Fe₂O₃ is 1.2%，and the total content of flux oxides K₂O，Na₂O，CaO, and MgO is 5.1%，which is close to the chemical composition of Jingdezhen white porcelain body in the early Ming Dynasty. Kaolin is introduced into the body of the Yaoli kiln ceramic tile，and the “binary formula” of porcelain stone and kaolin is used to make the quality of the ceramic tile body better. The main cosolvent in the glaze of white glazed tiles unearthed from the Yaoli kiln in Jingdezhen is likely CaO, with an average content of 10.29%. The contents of K₂O and Na₂O are relatively low, with an average of 3.22% and 0.52%, respectively. The CaO of Yaoli ceramic tile glaze should come from glaze ash，and glaze ash or plant ash should be introduced into the glaze formula. There are many kinds of glaze ash and glaze fruit，resulting in a large fluctuation of Fe₂O₃ content in porcelain glaze. There are 9 pieces of calcium alkali glaze and 11 pieces of calcium glaze，and the glaze formula is unstable. Chromaticity analysis shows that the main wavelength of Jingdezhen white glaze ceramic tile is approximately 515 nm, which falls within the green band of visible light waves, closely resembling the green glaze of white glaze ceramic tiles in the Ming Dynasty. The iron content ( average value is about 0.48%，0.61%，0.64%，0.99% ) in the glaze formula of the four regional samples gradually increased from yellow to light and green to green，which is consistent with the glaze color of the Ming Dynasty green and white glaze ceramic tiles of Yaoli Kiln in Jingdezhen.