In the present invention, the weight is lowered as the feed is consumed, and when the feed is supplied, the display member is attached to the first wire extending outwardly connected to the weight, and the weight is lifted or lowered The present invention relates to a feed tank in which a display member is lowered to allow easy confirmation of the amount of feed stored on the outside, An inlet 11a is formed at an upper portion to communicate with the storage chamber and an outlet 11b is connected to the feed pipe A so as to supply feed to the feed pipe A; A lid 12 for opening and closing the inlet 11a; A guide pipe (13) fixed to the lid (12) so as to communicate with a storage chamber of the housing (11) with a pipe-shaped body; A weight 14 placed on the feed stored in the housing 11 and moving together when the feed is discharged to the outlet 11b and the upper position is gradually lowered; One end of the guide pipe 13 is fixed to the weight 14 through the guide pipe 13 and the other end extends outside the guide pipe 13 to rotate the lid 12 by pulling the user to close the inlet 11a A first wire (15); When the first wire 15 is reciprocated while being fixed to the first wire 15 and the position of the weight 14 is lowered according to the feed discharge or the feed is fed into the storage chamber and the position rises, (16) for moving together with the feeder (15) and displaying the storage amount of the feed; And a second wire 17 fixed to the lid 12 or the guide tube 13 to open the inlet 11a by rotating the lid 12 by pulling the user.본 발명은 중량체가 사료가 소모됨에 따라 낮아지고 사료가 공급될 때 상승토록 하여, 이 중량체와 연결되고 외부로 연장된 제1와이어에 표시부재를 장착하여 사료 소모 또는 공급에 따라 중량체가 승하강할 때 표시부재가 하강하여 외부에서도 사료의 저장량을 쉽게 확인할 수 있도록 하는 사료 급이탱크에 관한 것으로,저장실과 연통되게 상부에 입구(11a)가 형성되고, 출구(11b)는 급이관(A)에 사료를 공급할 수 있도록 급이관(A)과 연통되게 연결되는 하우징(11); 입구(11a)를 개폐하는 덮개(12); 파이프형상의 몸체를 가지고 하우징(11)의 저장실과 연통되도록 상기 덮개(12)에 고정되는 안내관(13); 하우징(11)에 저장된 사료 상부에 놓여지고, 사료가 출구(11b)로 배출되어 상부 위치가 점차 낮아질 때 함께 이동하는 중량체(14); 일단부가 상기 안내관(13)을