Observation window for gas hood of paper machine

The invention relates to an observation window for a gas hood of a paper machine, comprising an observation window, a gas hood connected with the observation window, and a stainless steel plate, wherein the stainless steel plate is arranged in the observation window, and forms a slope together with the bottom of the observation window. Compared with the prior art, the observation window has the advantages that the operation is convenient, the safety and the reliability are realized, the quality is improved, and the like.