The invention relates to a packing structure for fixing and protecting electronic products. The packing structure comprises a box body and buffer structure installed inside the box body. The buffer structure comprises a main panel installed at the diagonal position of the box body. The circumference of the main panel is respectively connected with a plurality of lateral boards and at least one lining board. After the lateral boards are folded, at least one holding space is formed inside the box body. The lining board lies against two adjacent lateral walls inside the box body. The packing structure is simple and easy to be manufactured, thereby effectively reducing the usage amount of paper material, being used for supporting and fixing products inside the external box, and protecting theproducts from being bumped.