The embodiment of the utility model provides an active bicycle relates to the body -building apparatus field. This active bicycle includes active bicycle body and air purification device, the active bicycle body includes handle support, saddle pillar and flywheel, air purification device sets up in handle support, air purification device includes the wheel, to the shaft, the filter screen, dryer and at least one wind wheel, the inner chamber bottom of dryer is lain in the one end of shaft, every wind wheel all overlaps with the wheel locates the wheel off -axial, and every wind wheel all is located the dryer, the wheel is located outside the dryer, the flywheel passes through tendency drive with the wheel and is connected, the inner wall fixed connection of filter screen and dryer. The embodiment of the utility model provides an utilize motion person to rotate the wind energy that produces at the wind wheel that the in -process mechanical energy that the acting produced to active bicycle of taking exercise turned into air purification device, realized the effectual utilization to active bicycle's delivery work for this active bicycle has energy -concerving and environment -protective, function diversified characteristics.