Tonifies qi and strengthens the spleen, nourishes the kidneys and essence. Used for kidney qi deficiency syndrome, symptoms include fatigue, lack of strength, shortness of breath, poor appetite, back pain, spontaneous sweating, and weight loss. For lung cancer patients with the aforementioned symptoms, this medicine combined with chemotherapy can help improve the effects of chemotherapy, enhance quality of life, increase NK cell activity, and improve immune function indicators such as CD3, CD4/CD8.