Abstract: A contractible laptop computer cooler comprising a main shell body with at least one cooling fans installed internally, two sliding sleeves each is installed on one side of the main shell body, each of the sliding sleeves wraps one side of the main body shell externally; a plurality of sliding slots are on top and bottom of the main body shell, the top and bottom of the sliding sleeves have a plurality of protruding ribs corresponding to the sliding slots; an expansion port is on the bottom of the main body shell to connect to other peripherals, such as USB Hub, Fireware (IEEE 1394), Network communication, multiple specification card reader and Port Replicater or a various of computer connectors collectively called Docking Station. Based on the structure, the present invention is easy for users to carry and store.