In the present study, patients in the study group showed significantly lower levels of CEA and NSE, suggesting that Shenqi Fuzheng injection improved the prognosis of patients, which may be attributed to the fact that Astragali radix and Codonopsis radix enhanced the sensitivity of tumor cells to radiotherapy, which indirectly boosted the effectiveness of radiotherapy. The gene discussed is CEACAM5; the disease is neoplasm.