PURPOSE: A memory module tray is provided to enhance the packing density of a small-sized memory module by utilizing an existing memory module tray. CONSTITUTION: A plurality of packing regions(20) are formed in the inside of an upper portion of a tray body(42). A plurality of slits are formed at each packing region(40). A plurality of grooves are formed at predetermined positions of a left end side and a right end side of each packing regions(20). The tray body(42) is formed with a predetermined material for enduring total weight of packed small-sized memory modules(21) in a packing process of the small-sized memory modules(21). The packing regions(20) are divided by inserting partitions(27) into the grooves. The partition(27) includes a projection portion and a groove portion.
