The invention discloses a method for producing a whole-plant dark green corn particle fodder. The method comprises the following steps: crushing fermented whole-plant dark green corn and then adding complete feed; fermenting under the effects of inoculating microbes and enzyme for the second time; mixing the product of secondary fermentation with a starch mixture and a concentrated material; extruding and cold-pelletizing, thereby acquiring the whole-plant dark green corn particle fodder. According to the method, under the effects of crushing, adding inoculating microbes and enzyme and fermenting, the macromolecule material structure, such as crude fiber, in the whole-plant dark green corn is further damaged, the specific area of the fodder particle is increased, and the starch mixture and the concentrated material are added, so that the interaction effect and the caking property between the fodder particles are promoted; the particle fodder is prepared under an extruding effect of a granulation machine; the damage to thermo-sensitive functional matters, such as probiotics, biological enzyme and vitamin, caused by conventional high-temperature dry particle can be avoided; the whole-plant dark green corn particle fodder suitable for automatic transportation of the fodder can be produced; the application of the whole-plant corn pig feed can be promoted.