A memory socket protecting cover adapted to be assembled to a memory socket which is adapted for a memory module to insert is provided. The memory module includes a fool-proof concave, and includes a fool-proof member corresponding to the fool-proof concave. The memory socket protecting cover includes two lateral walls and a wear-resistant member. The two lateral walls are adapted to be disposed at two sides of the memory socket. The wear-resistant member is connected to the two lateral walls and adapted to be disposed on the fool-proof member. A width of the wear-resistant member is greater than or equal to a width of the fool-proof member and is smaller than a width of the fool-proof concave. When the memory module is inserted in or pulled from the memory socket, a wall of the memory module besides the fool-proof concave is adapted to contact the wear-resistant member.