Abstract: In order to provide theoretical basis for fertilizer selection, the quality of commonly used organic fertilizers in flue-cured tobacco production in Jiangxi province was studied through determination of nutrient contents, contents of organic nutrients and harmful components, The results showed that the water content of most of the commercial organic fertilizers exceeded the limit, and the organic matter of more than half of the products was lower than the lower limit standard. Based on the analysis of water content, organic matter, total nutrients, organic nutrients and other indicators of fertilizer quality, the quality of TT was the best, the quality of SN and TD followed, and these three kinds of organic fertilizers were better than QS and JS. The contents of lead, cadmium, chromium, arsenic and mercury in all tested organic fertilizers were within the limit range of NY 525-2002 in 2011.The principal component analysis showed that the first principal component was the carbon and nitrogen factor, and the second principal component was the phosphorus and potassium factor. The system cluster analysis showed similar results with the principal component analysis. The tested 14 samples were divided into 5 classes, including unfermented rape cake, fermented rape cake, and high, medium and low amino acid content organic fertilizers. The correlation analysis showed that organic matter, crude fat, total sugar, total amino acid and total nitrogen showd highly significant positive correlations between each other. The results showed that total amino acid content of the first principal component was the most important and one of controllable indicators of the quality of organic fertilizers.