Cancer in nearly thirty years has been the leading causes of death in Taiwan. The survival rate was improved after early diagnosis and treatment such as surgery, chemotherapy, and radiotherapy. Many patients still botherd by the side effect of treatment, even affect the quality of life. Therefore many doctors had try to decrease the side effects of radiotherapy and chemotherapy for a long time. This article is a case of a 40-year-old female who had colorectal cancer with ovarian metastasis. She complained of nausea, abdominal fullness, and constipation after surgery and chemotherapy. She was diagnosed as qi deficiency of spleen and stomach. We give her Traditional Chinese medicine after the chemotherapy. After the treatment, her symptoms was improved and the quality of life is also improved.