The quality characteristics of soybean Dasik with Letinus edodes powder was studied as follows. In general compositions, the moisture content was increased with increase of the amount of the Letinus edodes powder added, The content of crude protein was significantly increased (p<0.05) with increase of the added poweder amount, while the crude fat content was decreased significantly (p<0.05). In textural properties, with increase of the amount of the Letinus edodes powder added, the hardness, the gumminess and the chewiness showed a tendency to be increased significantly, whereas the springiness and the cohesiveness were going to be significantly decreased (p<0.05). In chromacity, with increase of the amount of the Letinus edodes powder added, the value L of lightness was much decreased, showing a significant difference (p<0.05), while the value a of redness and the b of yellowness were significantly high (p<0.001). In sensory acceptability, the appearance, the texture and the softness showed the highest points at the samples with no Letinus edodes powder added, but the taste recorded the top point at the treatment with 40% of the Letinus edodes powder added. From the results said above, a good synergistic effect on health and taste could be expected in point of nutrition and sensory acceptability by using Letinus edodes as a food ingredient. In addition, the possibility to commercialize items like soybean Dasik with Letinus edodes powder was confirmed. Therefore, the research and development of new product using Letinus edodes should be more activated from now on