The invention provides a hopper. The hopper comprises a hopper body, an adjusting base plate, a swing frame and an adjusting frame. The adjusting base plate is located at the position, located below one side of the hopper, in the hopper, one end of the adjusting base plate is connected with the swing frame, the swing frame is located at the lower portion in the hopper body, and the adjusting frame is located on the lower right side in the hopper body. The swing frame can swing around the connecting position between the swing frame and the hopper body, and when the swing frame swings, the swing frame can make contact with or be separated from the adjusting frame. The adjusting base plate and the adjusting frame are adjusted and the swing angle, the swing frequency and the swing amplitude of the swing frame are changed to be adapted to the speed at which materials pass through the hopper and the direction in which the materials pass through the hopper, and the satiation that the materials are blocked in the hopper can be prevented and dealt with. The hopper is simple and ingenious in structure and practical in function and has good application prospects.