The invention relates to the technical field of agricultural machinery, and discloses a straw feed production apparatus, which comprises a production device frame, a breaking mechanism and a reactionmechanism, wherein the breaking mechanism comprises a rotating motor, a rotating shaft, a transmission device, a ball mill, a material inlet and a feed screw, wherein the rotating motor is fixedly connected to one side of the top portion of the production device frame by fixing bolts, and the transmission device is fixedly connected to the bottom portion of the rotating shaft. According to the present invention, with the straw feed production apparatus, the problem that the straw accumulation cannot be treated can be solved; by arranging the reaction box, the feed is prepared from the straw ground into the powder through the chemical method; the electric heater arranged in the reaction box is used for providing the suitable reaction temperature, the outer side of the electric heater is provided with the anticorrosion protection cover so as to prevent the electric heater from being damaged, and the reaction material is the hydrochloric acid solution, such that the straw powder can be effectively prepared; and after the reaction is finished, neutralizing is performed with the caustic soda solution so as to obtain the straw feed capable of being taken by livestock.