Bilateral pleural thickening is a description of the pleural condition on CT that suggests an increase in pleural thickness, which is indicative of some clinical chest pain symptoms. Bilateral pleural thickening is indicated in the diagnostic findings when an increase in pleural thickness is detected during lung CT examination. The causes of this condition include pneumonia, tuberculosis, and tumors, which are associated with repeated pleural irritation, fibrosis, and tumor cell proliferation, and can be treated according to symptoms and history. If pleural thickening is accompanied by obvious symptoms such as chest pain, cough, fever, etc., it is necessary to consult a doctor in time for observation, and carry out standardized treatment under the guidance of the clinician after diagnosis of the condition, so as to avoid delaying the condition.