To improve the detection precision of the wind pressure sensor of the grain drier.

A burner barrel 45 which has a burner 5 inside is provided on the front side of the grain drier, outside area passing through the burner barrel 45 is exposed to burner flames and made into a hot blast, which is circulated to a hot blast chamber 5 communicating with the burner barrel 45; and a space making it possible to introduce the outside into the gap part between a burner base 42a supporting the burner 5 in the burner barrel 45 and the reverse surface of the burner barrel 45 is formed and a wind pressure sensor 4 is arranged in the space part. Further, when the wind pressure sense surface of the wind pressure sensor 46 is hung and fitted to the burner base 42a and a surrounding wall 47a surrounding the flank or reverse surface of the sense surface and a slit air intake in the front of the burner barrel 45 are formed, the air intake is formed opposite the front of the wind pressure sense surface of the wind pressure sensor 46 below the burner base 42a and when not, a shield surface which stops air introduction is provided. Further, the air intake 49 is formed in the reverse surface of the burner barrel before and below the wind pressure sense surface of the wind pressure sensor 46.