Long sleeve type rooler-skates

The utility model relates to a pair of roller skates, which is composed of skate bodies, bottom supporting frames and rolling wheels, wherein, a plurality of rolling wheels are arranged on the straight lines under the centerlines of the bottom supporting frames in the way of a single rail type, the rolling wheels are all arranged under the bottom supporting frames via a roller shaft, and the skate bodies have high waist parts. The utility model has the best executive plan that three rolling wheels are arranged, and ankle protecting plates are arranged outside the high-waist parts of the skate bodies in order to protect foot joints. The roller skates used for sliding flexibly and lightly can match a human body to complete figure actions having high difficulty as well as complete different kinds of actions such as straight lines, curves and rotation at an origin point, and the roller skates can be used as tools for physical training and vehicles for outdoor cross country.