To provide a waste scattering preventive tool 1 for a waste input hopper that can prevent waste put in the waste input hopper 21 from flying up by updrafts due to input and scattering around, saving cost, and easily being attached to existing facilities; and a hopper equipped with the waste scattering preventive tool 1.

In the preventive tool, a covering element 12 extending so as to cover an upper part of the waste input hopper 21 is made to be a netlike element having contraction and expansion properties. A shape in a plane surface direction is made to be a C-shape opening in a direction carrying waster into the waste input hopper 21. Therefore, the area of the covering element 12 can be widely ensured, and the waste flying up due to the updrafts can be captured. The waste can be prevented from scattering around the waste input hopper 21.