Abstract: To study the effects of Curcuma zedoaria with alcohol extraction on seed germination and seedling growth of mung bean, we conducted a soaking test of mung bean with different-concentration gradients of Curcuma zedoaria with alcohol extraction to determine whether the traditional Chinese medicine Curcuma zedoaria could be used as a biological plant growth hormone. We used the indoor hydroponics and germination on the petri dish paper. The content of chlorophyll was determined by pectro photometric method and the contents of soluble sugar were determined by anthrone colorimetry. The results showed that: the seed germination and seedling growth of mung bean were promoted by low concentration, were delayed by high concentration, and the delayed effect increased along with the increasing concentration. The germination index, root length, plant height, hypocotyl length, fresh weight, dry weight and root-shoot ratio increased first and then decreased, and the optimum concentration was 150 mg/L. The chlorophyll content and soluble sugar content of mung bean seedlings also increased first and then decreased, and the optimum concentration of organic matter was 300 mg/L. The results indicated that the low concentration of Curcuma zedoaria with alcohol extraction promoted the growth of the plant, but it was not conducive to the accumulation of organic matter. High concentration of Curcuma zedoaria with alcohol extraction delayed the growth of plant, but was beneficial to the accumulation of organic matter.