The invention provides a trough rack and a feeding device using the trough rack and belongs to the field of breeding industry. The trough rack comprises a transverse rack and a support, wherein the support is used for supporting the transverse rack, the transverse rack comprises a first cross beam and a second cross beam which are arranged side by side, the first cross beam comprises a first connecting piece and an extensible piece which are connected in sequence, and the second cross beam comprises at least two second connecting pieces hinged in sequence. The first cross beam and the second cross beam can be bent in the same horizontal plane or two mutually parallel horizontal planes in the same direction. When a narrow space is encountered, the extensible piece is loosened for extending or shortening, the first cross beam and the second cross beam are bent in the same direction, so that the transverse rack is wholly bent and passes through the narrow space. When a designated place is reached, only the length of the extensible piece is needed to be adjusted, and all the parts are fixed. The feeding device uses the trough rack, both a feeding trough and the trough rack are bent, the feeding device can be moved on the premise that the feeding trough is not taken down, and the moving process is simple, quick and convenient.