Dual-purpose roller skate

The utility model discloses a dual-purpose roller skate, which is characterized in that a foldable pulley is installed on a rail from the bottom part of the roller skate to a recess at the outer side edge of the bottom part of the roller skate to convert the dual-purpose roller skate between a walking shoe and a roller skate. Two recesses are formed on each shoe, rails capable of realizing translation of an upper bracket of a pulley rod are arranged in the recesses, devices for clamping and locking the pulley rod are arranged at the two ends of the rails, the pulley rod is composed of an upper foldable bracket and a lower foldable bracket and is locked by a lock catch, a bayonet is arranged on the upper bracket, the pulley rod is clamped on the rails of the recesses, and the lower bracket is connected with the pulley through a rotating shaft. When walking, the pulley rod is transferred and locked at the rail end at the outer side edge of the bottom part of the shoe and is locked, and the upper bracket and the