Roller skate with mileage record

The utility model relates to a roller skate with mileage record, being provided with hall sensor on the one or more installation department of the fixed shaft of support one side lower extreme, setting up at least one magnetic path on the wheel hub of the wheel of counterpointing with hall sensor, central control module's inputoutput interface is connected to every hall sensor's output, and this central control module is provided with the battery that is used for the power supply through a wireless communication module bond to user's cell -phone on the support. The utility model discloses in, when speed exceeded predetermined maximum value, the music or the bee sound of warning were selected whether to send according to this comparative result by the cell -phone to the suggestion people are slowed down, make the people can the present speed of audio -visual grasp, have guaranteed the safety of coasting, and people can know the distance of moving and coasting at every turn in addition, also can know the motion