The invention discloses a smart water dispenser. The smart water dispenser comprises a housing and a bucket, a water tank, a filter, a water pump and a main control circuit board, which are mounted inside the housing. The smart water dispenser, disclosed by the invention, heats/cools drinking water for a user by using a water volume adjusting knob to set up the to-be-heated water volume, a water temperature adjusting knob to set up the to-be-heated/cooled water temperature and using the main control circuit board to control a flushing electromagnetic valve, a water addition electromagnetic valve and a water pump, to avoid unnecessary repeated heating/cooling for the drinking water and achieve the purpose of saving energy; in addition, the filter can be automatically cleaned by opening/closing the flushing electromagnetic valve.