Objective To analyze the symptom cluster of fatigue,anxiety,pain and sleeping disorder in patients with lung cancer underwent chemotherapy and to explore its influencing factors. Methods From September to December 2017,220 lung cancer patients hospitalized from five hospitals in Hunan Province were selected by convenience sampling method. General information questionnaire,digital pain scale,simple fatigue scale,medical anxiety and depression scale and Pittsburgh Sleep Quality Index scale were used for investigatiuon, and blood test results during chemotherapy were collected. Cluster analysis w...