Abstract: The differences of change rules over time of 7 kinds of mineral elements contents in potted and field tree peony were studied, in order to provide scientific basis for balanced nutrition, rational fertilization and cultivation of high quality and efficiency of potted and field tree peony. Using pot and field- cultivated tree peony‘Luoyang hong’as test material, seven kinds of mineral elements (nitrogen, phosphorus, potassium, iron, manganese, zinc and copper) were measured and compared from leaves and flower buds collected in different date (between May and November), and the correlations between mineral elements were analyzed. The results showed that the changing trend of major elements (nitrogen, phosphorus and potassium) in leaves and flower buds under two kinds of cultivation patterns were basically the same. Average content of major elements in leaves from high to low were nitrogen, potassium and phosphorus, while in flower buds from high to low were nitrogen, phosphorus and potassium. The changing trend of microelements (iron, manganese, zinc and copper) content in leaves and flower buds of tree peony under two kinds of cultivation patterns had several differences. Average content of microelements in leaves of field tree peony from high to low were Fe＞Mn＞Zn＞Cu, while average content of microelements in leaves of potted tree peony were Fe＞Zn＞Mn＞Cu. The changing of average content of microelements of flower buds under two kinds of cultivation were as same as the content of microelements in leaves of potted tree peony. Correlation-differences were existed among mineral elements in leaves of tree peony under two kinds of cultivation patterns, while the correlation between nitrogen and phosphorus reached the significant or above level. Correlation-differences among mineral elements in flower buds of tree peony under the two kinds of cultivation patterns also existed, however, the correlation between nitrogen and phosphorus, nitrogen and potassium were both good.