Objectives: This study was aimed to report a patient with metastatic pancreatic cancer treated with modified Bangam-tang and Gunchil-dan in conjunction with gemcitabine. There were better survival-related outcomes compared to gemcitabine alone. Methods: The patient with metastatic pancreatic cancer received gemcitabine as palliative chemotherapy since June 2016 concurrent with modified Bangam-tang and Gunchil-dan since October 2016 to October 2017. To evaluate the effect of treatment, tumor markers (carbohydrate antigen 19-9 (CA19-9) and carcinoembryonic antigen (CEA)), Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1, and overall survival were checked. Adverse events were evaluated according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. Results: After 12 months with the combination treatment, levels of CA19-9 were decreased from 8747 to 265.7 ng/ml and CEA from 42.2 to 6.5 U/ml. Clinical partial response state was shown until May 2, 2017 and stable disease state was maintained from August 4, 2017. In March 2018, the patient got an operation including pancreatectomy and diagnosed with no evidence of disease state in September, 2018. In conclusion, it showed the overall survival of 29 months from June, 2016 to November, 2018. Serious adverse events were not identified. Conclusions: This study suggested that combined treatment with modified Bangam-tang and Gunchil-dan may show better outcome in patient with metastatic pancreatic cancer than gemcitabine alone.