The difference between frozen mushroom and oil mushroom lies in different morphological characteristics and taste, and different growth environment. Another name of money mushroom is oil mushroom, which is very common now. Lentinus edodes is preserved at low temperature, and frozen Lentinus edodes is a characteristic variety in Northeast China. It is harvested at10-1month. Flammulina velutipes grows in bundles on the branches of deciduous trees, which is more suitable for the trunk of willow or poplar. Frozen mushroom, also known as yuanmo, is a wild fungus above basswood in the northeast jungle. Because the growing season is in autumn and winter, it is named frozen mushroom.