The utility model provides a wheel shaft structure, it contains a round portion, combination or integrated into one piece are in round body portion of portion one side, and the trompil that this body portion is used for wearing to establish at first article is rotated, and forming the combination portion in this body portion one end, this combination portion is used for limiting this first article, also can implement to the latch fitting or correspond with the combination of combination portion, utilize this maybe should be used for limiting this first article by correspondence piece to the latch fitting. Therefore, the utility model discloses a wheel shaft structure can reach purposes such as wheel shaft structure retrencies, quick montage, reduction manufacturing cost.