Pneumothorax after pleural fixation needs to be treated according to the severity of pneumothorax, including general treatment and closed chest drainage treatment. 1. General treatment: if pneumothorax occurs again after pleural fixation, it is usually limited pneumothorax, and there will not be extensive lung compression, so there is no need for special treatment, and it is enough to avoid coughing and defecation. 2. Closed thoracic drainage: If pneumothorax occurs again after pleural fixation and the compression ratio of pneumothorax reaches more than 30%, closed thoracic drainage is needed for treatment. If pneumothorax occurs again after pleural fixation, it is recommended to consult a doctor in time to clarify the degree of pneumothorax and receive appropriate treatment under the doctor’s guidance.