The utility model relates to a structure of an on-line weighable ash bin. The structure comprises a steel support, a bin pump, an ash bin, a support component, a cross beam and an escalator platform, wherein the escalator platform is disposed on the upper part of the steel support and is not connected with the ash bin, the ash bin is engaged with the support component, the cross beam is arranged on the steel support, a weight measuring element is mounted between the support component and the cross beam, and the ash bin and the bin pump are connected through a connection hose. With adoption of the structure of the one-line weighable ash bin, because the ash bin and the bin pump are connected through the connection hose, the ash bin is not affected by an upright acting force, and thus the departing weight can be accurately measured.