The utility model relates to a non-extracorporeal circulation direct vision atrial septal defect repairing apparatus which is made of transparent materials and comprises a diaphragm 1, wherein easy-tearing indentations 5 forming a discontinuous closed line shape are arranged on the inner side of the diaphragm along the periphery of the diaphragm, and the periphery of the diaphragm is connected with the upper edge of a skirt-shaped repairing material 2. The upper edge of the repairing material is provided with a ring edge 3, a ligature 4 penetrates into a ring, and both ends of the ligature extend out from the same opening of the ring edge. Because the atrial septal defect neoplasty can be carried out directly and visually without adopting the extracorporeal circulation, the utility model has the advantages of easy production, convenient operation and high safety and reliability; the operation is as simple as a common thoracic surgical procedure, and the operational cost is only a plurality of thousands of yuan. The operation can be completed through cutting the right chest wall, which is beneficial to patients; large amount of operational cost can be saved; the operation cut is beautiful, and the recovery quality is favorable than that the traditional extracorporeal circulation operation.