The invention discloses a straw self-ripening puffed soft feed granulator. The granulator structurally includes a locking bolt, a foot frame, a control box, a feeding hopper, a machine body, a feed efficient production device, a power motor device, an electromagnetic heating device, a power transmission mechanism, a protective cover mechanism, an uniform stirring and crushing mechanism, a roller driving mechanism, a feed extrusion mechanism and a thread feeding mechanism. According to the principle of electromagnetic heating, the straw self-ripening puffed soft feed granulator achieves rapid heating of raw materials, multiple stirring rods are used for uniformly stirring and crushing the raw materials, the raw materials are thus heated evenly and prevented from clogging through the threadfeeding effect, and the working efficiency is largely improved.