The utility model discloses a windproof reinforcing device for a movable workshop building. The windproof reinforcing device for the movable workshop building comprises a connecting mechanism, a mooring rope and a ground anchor, wherein the connecting mechanism is fixedly connected to a steel column located on the inner side of the upper end of the movable workshop building, a first mooring rope connecting device of the connecting mechanism penetrates through a wall composite board of the movable workshop building to protrude out of the wall of the movable workshop building, the ground anchor comprises a second mooring rope connecting device and a cavity with a strip-shaped hole, a fixing plate provided with transmission teeth and a rotary rod provided with a gear are arranged in the cavity, the gear is meshed with the transmission teeth, and the fixing plate can be driven by the rotary rod to stretch out of or retreat back into the cavity along the strip-shaped hole. According to the windproof reinforcing device for the movable workshop building, the connecting mechanism is fixedly connected to the steel column located on the inner side of the upper end of the movable workshop building, and the first mooring rope connecting device of the connecting mechanism penetrates through the wall composite board of the movable workshop building to protrude out of the wall of the movable workshop building; in addition, the windproof reinforcing device further comprises the ground anchor which is buried underground and located outside the movable workshop building, and the purpose of stabilizing the movable workshop building is achieved by connecting the first mooring rope connecting device with the second mooring rope connecting device through the mooring rope.