Abstract: A track device is provided for a desk having a plate slidably mounted therein and includes a pair of tracks respectively fixed to two mutually facing inner walls of the desk and a pair of sliding strips securely and respectively mounted two lateral sides of the plate. A bumping block is mounted to each track and includes an end. An arcuate bumping member is provided on the end of the bumping block for impeding an end of an associated sliding strip. Two ribs project from an end face of the end of the bumping block and extend radially outward toward the arcuate bumping member, thereby presenting a V-shape configuration.