After lung cancer metastasizes to bones, patients may show bone pain or pathological fracture, which can be treated clinically through pain relief to improve patients’ quality of life. The specific treatment methods are as follows: 1. radiotherapy: patients can be treated with radiotherapy for pain relief; 2. bisphosphonate drug therapy: such as zoledronate sodium can relieve bone pain and prevent fracture; 3. cancer pain triple-step pain relief: patients can use strong opioids such as morphine and oxycodone for pain relief. For side effects such as constipation, psychiatric symptoms and addiction caused by drugs, targeted treatment can be carried out. Clinically, dulcolax, which has a short half-life and ceiling effect, is not recommended.