Inclusion Criteria:  aged 18 or over; diagnosed with stage III or stage IV lung cancer by pathological section or cytology; experienced unexplained fatigue syndrome: the score of 3 or more on the Fatigue Symptom Inventory (FSI); and able to provide informed consent and effectively collect data.  Exclusion Criteria:  diagnosed with cognitive dysfunction or other mental illnesses that may interfere with their completion of treatment; who are with a life expectancy <3 months, or whose physical conditions are considered ineligible for the present study based on the physician's judgment; and who are receiving or have just completed other lung cancer-related intervention programs within the last six months