The invention discloses a ceiling-type wood rotary cutting device, comprising a ceiling frame, the end of the ceiling frame is provided with a mounting end; the ceiling frame is arranged on a fixing plate, the fixing plate is provided with guide rails, and grooves are arranged on both sides of the guide rails , the bottom of the ceiling frame is provided with a sliding seat, the bottom of the sliding seat is provided with a sliding groove, the inward facing surface of the sliding groove is provided with a convex edge, the sliding seat is set on the guide rail, and the convex edge is set in the groove; The part is provided with a mounting plate, the fixed plate is provided with a fixed frame, the fixed frame is provided with a driving wheel, the fixed plate is provided with a driving motor, the driving motor is provided with a driving shaft, the driving shaft is connected with the driving wheel, and the mounting plate is provided with a rotary cutting wheel, The rotary cutting wheel is connected with the driving wheel through a belt, and the rotary cutting wheel is set with a rotary cutting knife ring. The driving wheel of the invention drives the rotary cutting wheel to rotate through the belt, so as to facilitate the rotation control of the rotary cutting wheel; the rotary cutting wheel facilitates the rotary control of the rotary cutting knife ring, and the rotary cutting knife ring facilitates the rotary cutting treatment of wood .