The status of plant nutrient characteristic plays a vital role in yields. Therefore, 30 tumorous stem mustard farmers in Fuling district, Chongqing City, China, were selected in our present study, the variation characteristics of 10 necessary nutrients contents in leaves and stems of tumorous stem mustard in different growth stage (such as seedling, rapid expanding and harvest stage) were determined and also their relationship to the yields was set up by field survey and laboratory analysis. The results indicated that the contents of potassium (K) and sulfur (S) were both high during the whole growth periods. However, the other macroelements and microelements contents were fit to the normal plants; and also, the changes of nutrient content in leaves and stems were varied by the different growth stages, in generally, the contents in leaves at seeding stage was in the orders of nitrogen (N) > potassium (K) > calcium (Ca) > phosphate (P) > sulfur (S) > magnesium (Mg); macroelements content in the leaves at rapid expanding stage and harvest time were in the seriers of N > K > Ca > S > P > Mg. While in stems were followed by the order: K > N > P > S > Ca > Mg; Except rapid expanding stage(ferrum (Fe) > zinc (Zn) > manganese (Mg) > copper (Cu)), leaves and stems in all three growth periods were in the order of Fe > Mn > Zn > Cu. The contents of N, P, K, Fe, Cu and Zn in the leaves decreased from seedling stage to harvest time, while the contents of Ca, Mg, S and Mn decreased firstly, and then increased from seedling stage to harvest time,. From rapid expanding stage to harvest time, the contents of N, S, Fe and Cu showed a decreasing tendency, while other elements were the increasing tendency. In addition, the nutrient contents in different organs were also observed, the contents of N, P, K, Cu and Zn in leaves at rapid expanding stage and harvest time were lower than that of the stem nodule. But the contents of Ca, Fe and Mn showed the adverse pattern. S and Mg contents varied little, which indicated that the sensitivity of different parts of tumorous stem mustard to different nutrients were different. Correlation analysis showed that there were significant negative relationship between Mg, Fe, Mn, Zn in various organs at different growth stages and yields, however, K, Cu had the positive correlation with yields. Stepwise regression analysis was chosen to establish a predictive regression model between nutritive elements among different growth stages of tumorous stem mustard and yields, the optimum regression equation was obtained as follows, Y=36768+3583X_K-6.328X_Fe-76.09X_Mn at seedling stage, Y=50458+21557X_P+7925X_Ca-88092X_Mg-1145X_Cu and Y=32487+7294X_K-116122X_Mg for nutritive elements in leaves and stems at expanded quickly stage, respectively. while Y=36064+3413X_K-30.15X_Fe and Y=11791+7334X_K-385X_Zn in harvesting time. It can concluded that more attention should be paid to the rational application of K fertilizer in every growth stage of tumorous stem mustard, and P fertilizer in rapid expanding stage. The negative effects of some trace elements and Mg on yield of tumorous stem mustard could be regulated by increasing the application of organic manure compost.