The present invention relates to a functional chair with massage balls that is capable of allowing the massage balls to protrude outwardly therefrom through the manipulation of armrests to massage a user's muscles around the back and spine, thereby permitting the user's fatigue due to long sitting hours to be relieved. The functional chair includes: a seat； a seat support adapted to support the seat； a backrest having a plurality of massage holes formed penetratedly thereon； a backrest support having an inside partition extended from edges of an open surface； a pair of massage parts having the massage balls protruding from the massage holes or inserted into the massage holes； a pair of armrests adapted to rotate the massage parts； a seat connector adapted to fix the seat and the backrest thereto； and a stopper adapted to control rotation of the massage parts.
