The exact time it takes for a spontaneous pneumothorax to heal itself depends largely on the size of the pneumothorax volume. If the pneumothorax is small, it usually takes about 1-2 weeks to heal itself. If the volume of pneumothorax is large and cannot be healed spontaneously, it will take about 2 weeks to recover after active and effective treatment. 1. Small amount of pneumothorax: If the amount of spontaneous pneumothorax is small, belongs to mild pneumothorax, and there are no other clinical symptoms, it can be absorbed by itself in about 1-2 weeks, and can be cured by itself. 2. Large pneumothorax: If the spontaneous pneumothorax is more serious, the pneumothorax is large, and the patient has obvious symptoms such as chest tightness and breath-holding, this kind of pneumothorax can not be cured by itself, and it should cooperate with the professional doctor to carry out chest pumping or closed chest drainage, etc., and it usually takes about 2 weeks to recover. Once the symptoms of spontaneous pneumothorax appear, it is recommended to go to the respiratory internal medicine department or thoracic surgery department of the regular hospital as soon as possible to avoid aggravation of the condition. Usually, you should avoid coughing hard and holding your breath to avoid recurrence of pneumothorax.