Bone metastasis of lung cancer includes thoracic bone metastasis and systemic bone metastasis. In case of thoracic bone metastasis, rib pain, deep breathing pain and localized pressure pain at the metastatic site can occur. If the metastasis is to the thoracic spine, numbness and pain in the innervating plane of thoracic spine can be seen, but the point of pressure and pain is in the thoracic spine. If bone metastasis of lung cancer manifests as multiple bone metastases in the whole body, such as hip joint metastasis, knee joint metastasis, cervical vertebrae metastasis, etc., specific pressure pain can appear in the corresponding metastatic site, as well as pain related to movement, and painkillers can be given to relieve the symptoms. If bone metastasis of lung cancer wants to diagnose which bone it has metastasized to, the clinic can give MRI, PET-CT and bone scanning, etc., which can clarify the specific bone metabolism increase and suggest bone metastasis at the corresponding site, and limited pressure pain is easy to appear at the site of bone metastasis.