Automatic body size measuring device for sheep

The invention discloses an automatic body size measuring device for sheep, and mainly relates to the field of livestock facilities. The deviceis provided with a channel having an automatic measuring mechanism, the automatic measuring mechanism is composed of a sliding frame capable of integrally advancing or retreating, the bottom end of the sliding frame is provided with a lower supporting wheel capable of being drawn close upwards or opened at the two ends through a mounting groove, the middle of the sliding frame is provided with a first shaft piece and a second shaft piece capable of achieving ascending, descending, separating and combining, a winding wheel with a winding function is installed on the top of the sliding frame, and ruler belts are wound from the first shaft piece to the lower supporting wheel and from the second shaft piece to the winding wheel. The beneficial effects of the invention lie in that the chest circumference data forming an automatic barrier barrier can be automatically measured