The utility model discloses a foul smell absorption structure for just sink pond, it can be along with the cover that the gyration mud scraper together rotates is personally experienced sth. Part of the body to include, still include blast pipe, foul smell collecting pipe and pipeline swivelling joint head, the lower extreme of blast pipe is located and just sinks pond central point and put the department, and the lower extreme of blast pipe sealed linking to each other of upper end of passing through pipeline swivelling joint head and foul smell collecting pipe, sealed running through to theinternal portion of cover of lower extreme of foul smell collecting pipe, characterized by: still including the extension breathing pipe, extend the breathing pipe and wholly be along the first bar tubular structure that sinks the radial extension in pond, just extend breathing pipe length direction's the middle part and the sealed intercommunication of fixing of lower extreme of blast pipe, put near just heavy pond central point in the first radial inboard one end in pond of sinking on the extension breathing pipe, be close to the mill weir in first heavy pond on the extension breathing pipein the just heavy radial outside in pond one end, the side of going up of extending the breathing pipe lies in and just sinks pond face top, and the side of going up of extending the breathing pipe isprovided with a plurality of foul smell collection hole along the length direction interval.