Objective idiopathic hemothorax .Methods 46 patients wifh idiopathic hemothorax To explore the treatment method of were first closed thoracic drainage catheter ,of which 12 patients underwent emergency explor-atory thoracotomy,with video-assisted thoracic surgery in 10 cases,non-surgical treatment of 24 cases.Results 46 patients were cured without complications ,were followed up 3 months to 5 years.without recurrence .Conclusion Idi-opathic hemothorax once diagnosed , treatment principles that should be placed closed thoracic drainage , and timely surgical treatment,especially video-assisted thoracic surgery ,patients can reduce the amount of blood transfusion ,ef-fective,less invasive,faster recovery,less bleeding,the patient easy to accept .