The invention discloses a multifunctional bodybuilding office chair. The multifunctional bodybuilding office chair comprises a base, a box body bottom board, a bottom board, a power output mechanism, a box body lateral board, a chair back, a massage mechanism, a seat board, a seat board support, a sliding bar, a first swing block, a second swing block, a third swing block, a fourth swing block, afirst swing bearing, a second swing bearing, a third swing bearing, a fourth swing bearing, a fifth swing bearing, a sixth swing bearing, a first crank, a second crank, a third crank, a fourth crank,a connecting rod, a first joint bearing, a second joint bearing, a third joint bearing, a fourth joint bearing, a fifth joint bearing, a sixth joint bearing and a rotating shaft. The multifunctional bodybuilding office chair is an ordinary office chair in the overall appearance, and integrates three functions of office work, massage and bionic riding into a whole. The multifunctional bodybuildingoffice chair is simple in overall structure, novel in mechanism and wide in application prospect.