Abstract: A portable mini exercise bike which occupies a minimum space, comprises a pedal section which, by means of supporting elements, is fixed by means of a fixing element to a resting surface. The fixing element comprises a suction cup or a base plate. On the pedal of the pedal section, a removable pedal cover fits, on which are placed slippers having slots to allow straps to pass. The pedal covers have a lateral element with a nut screw, which permits the securing of a rod. On the axle of the pedal it is possible to insert a specially formed handle instead of a pedal, using straps to fix the handle in position. A flywheel can be assembled with the mini exercise bike.