Silver fungus and walnut soup itself has the effect of both yin and yang. Silver fungus as a traditional Chinese medicine is good for nourishing yin and moistening dryness, and can supplement the yin of the body. The Chinese herb walnut is a good tonic for yang, also known as Baiyangzi in ancient times, which has the effect of tranquilizing the mind and nourishing the kidney and yang, and can be used to treat kidney deficiency and long urination, so the combination of silver fungus and walnut in the decoction can play the role of both yin and yang. For patients with kidney deficiency of both yin and yang, it can play a good therapeutic role. Often these patients show soreness and weakness of the waist and knees, dry mouth and tongue, fatigue, long and clear urine, and frequent nocturnal urination. It can also be used to treat patients with physical deficiency, and can be used as a long-term dietary supplement for patients with physical deficiency as a daily health care to help improve their physical condition.