Dizziness of lung cancer patients may be caused by the following reasons, such as infection, respiratory failure, ion disorder, brain metastasis, etc. Therefore, when patients with lung cancer experience dizziness, they need to improve relevant examinations to clarify the diagnosis and take corresponding treatment according to the diagnosis. If patients have bacterial infection, they need to be treated with antibiotics, such as cefoperazone sodium sulbactam sodium, moxifloxacin, etc. If the patient has severe ionic disturbance, such as low chloride, low sodium, low potassium, it should be corrected by sedative sodium chloride and potassium chloride. If the patient develops respiratory failure, oxygen should be given. Non-invasive ventilator can be used for type I respiratory failure, and non-invasive ventilator is preferred for type II respiratory failure, and invasive ventilator treatment can be considered in case of ineffectiveness. If the patient is dizzy due to brain metastasis, radiotherapy, chemotherapy or symptomatic treatment can be considered according to the condition.