The invention provides a yield measuring device for rice breeding, which relates to the technical field of yield measurement and comprises a first support, a
winnowing machine is arranged at the upper end of the first support, a first
discharge pipe and a second
discharge pipe are arranged on the surface of the
winnowing machine, a yield detection structure is fixedly mounted at the
tail end of the first
discharge pipe, and the yield detection structure comprises a first
elbow discharge pipe. By arranging a yield detection structure, the
winnowing machine can screen full and empty unhusked rice through a winnowing function, so that the full unhusked rice is discharged into a first
measuring cup through a first discharging pipe, a first bent pipe discharging pipe and a first concentration funnel; empty unhulled rice can enter a second
measuring cup through a second discharging pipe, a second bent pipe discharging pipe and a second concentrated funnel, and at the moment, the
net weight content of the unhulled rice in the first
measuring cup and the
net weight content of the unhulled rice in the second measuring cup can be displayed on a first electronic scale and a second electronic scale; further, the proportion of empty and shriveled rice grains and full rice grains in the batch of rice grains can be obtained, and subsequent detection is facilitated.