The invention discloses a feeding structure matched with a waste pelletizer for use. The feeding structure is characterized by comprising a plurality of independent discharge units which are superposed for use, wherein each independent discharge assembly is re-assembled for different materials; each independent discharge unit comprises an airflow discharge unit, an inner airflow rotary discharge unit and an oscillating discharge unit, wherein the upper end and the lower end of the airflow discharge unit, the upper end and the lower end of the inner airflow rotary discharge unit and the upper end and the lower end of the oscillating discharge unit are provided with connecting sleeve structures. The feeding structure has the beneficial effects that: the feeding structure is simple in structure and is convenient to use, and arrangement and combination can be carried out according to feeding quantity and feeding time of different materials, so that the pelletizing forming degree and the pelletizing quality are greatly improved.