Assuming you are referring to the popular Magic Bullet blender, here are instructions for cleaning the base:
1. Unplug the power cord from the outlet and allow the unit to cool completely.
2. Remove any attachments from the base, such as the cup or pitcher.
3. Wipe down the outside of the base with a damp cloth to remove any dirt or debris.
4. Fill a sink with warm, soapy water and submerge the attachments in it to soak for several minutes.
5. Scrub each attachment with a sponge or brush to remove any stubborn residue and rinse well under running water.
6. Place all of the clean parts on a towel to air dry completely before reassembling and using again