Method for synergistically preparing hermetia illucens larva body protein powder and potassium diformate and application

The invention discloses a method for synergistically preparing hermetia illucens larva body protein powder and potassium diformate and application. The method comprises the following steps: firstly, grinding hermetia illucens larvae into homogenate or dry powder; stirring in an organic solvent, and centrifugally separating the slurry to obtain solid and liquid; adding a potassium hydroxide solution into the solid, stirring, and carrying out centrifugal separation on the obtained solid and liquid to obtain a protein solution; adding a formic acid solution into the protein solution, separating out protein precipitate from the solution, centrifugally separating to obtain a solid, and drying to obtain polypide protein powder; and concentrating the liquid and separating to obtain potassium diformate. According to the invention, insect protein extraction and potassium diformate preparation are organically combined, and potassium diformate is an antibiotic substitute encouraged by the country, so that the problem th