A package includes a main body and an impact buffer rib. The main body is configured to form a storage space to accommodate a packaged object. The impact buffer rib is disposed on a side of the main body and outside the storage space. The impact buffer rib includes root portions and a central portion. The root portions are both end portions of the impact buffer rib, couple to the main body, and have a first height. The central portion is between the root portions and has a second height larger than the first height.