The invention discloses an 
office chair capable of massaging the back, and relates to the technical field of office appliances. The 
office chair capable of massaging the back comprises an 
office chair base 
assembly, the office chair base 
assembly comprises a 
cushion, a lifting rod is fixedly connected to the center of the lower surface of the 
cushion, a 
chassis is fixedly connected to the lower surface of the lifting rod, and supporting shafts are rotatably connected to the 
tail end of the outer side of the lower surface of the 
chassis through bearings; the lower surface of each supporting shaft is fixedly connected with a fixing shell, the inner wall of each fixing shell is rotatably connected with a rolling wheel through a rotating shaft and a bearing, the rear end of the upper surface of the 
cushion is arranged to be arc-shaped, and a back supporting 
assembly is arranged above the cushion, so that the problems that most of existing office chairs only meet the function of 
human engineering and support the 
waist and the back sufficiently, however, great pressure is still caused to the 
waist and the back of the 
office staff after long-time sitting, the working efficiency is influenced after long-time sitting, and the 
office staff can be possibly suffered from diseases such as 
muscle strain of the 
waist and the back are solved.