The present invention discloses a debris collection device for cutting mechanism and an LCD panel cutting debris suction device. A debris collection device for cutting mechanism, wherein the debris collection device comprises a collection cap positioned behind the traveling direction of the cutting mechanism, and an air spray head positioned in front of the traveling direction of the cutting mechanism. The present invention can clear the debris produced in the LCD panel cutting process in time, and can reduce relevant defects such as line scratches, terminal scratches, short circuit, broken circuit, etc. which are generated because of debris. Thus, the yield and quality of products can be improved; the time of the subsequent cleaning process can be reduced; and the purposes of reducing risk, improving product yield and saving production cost can be achieved.