Abstract: In order to select the soil amendments suitable for the continuous cropping of Pseudostellaria heterophylla, the effects of different amounts of biochar and fulvic acid potassium on the growth, yield and quality of Pseudostellaria heterophylla were studied by the field experiments. The results showed that the application of different amounts of biochar (3 000, 5 250, and 7 500 kg·hm^-2) could increase the seedling emergence rates of Pseudostellaria heterophylla by 21.78%, 9.32%, and 14.65%; the application of different amounts of biochar had no significant effects on the plant growth of Pseudostellaria heterophylla at the germination period, but increased the single-plant weight and the content of chlorophyll at the vigorous growing period. When the application rate of biochar was 7 500 kg·hm^-2, the yield increased by 11.51% and the content of polysaccharides in root tuber increased by 44.44%; when the application rate of biochar was 3 000 kg·hm^-2, the saponin content increased by 23.27 %. The application of different amounts of fulvic acid potassium(525 kg·hm^-2, 1 125 kg·hm^-2, and 1 725 kg·hm^-2) decreased the seedling emergence rate of Pseudostellaria heterophylla, but increased the leaf number and leaf size of Pseudostellaria heterophylla at the vigorous growing period. When different amounts of fulvic acid potassium (525 kg·hm^-2, 1 125 kg·hm^-2, and 1 725 kg·hm^-2) were applied, the yield of Pseudostellaria heterophylla decreased in different levels, but the content of polysaccharides in root tuber increased by 51.20%, 37.34% and 46.84%, respectively, and the saponin content increased by 8.04%, 5.72% and 14.30%, respectively.