#$%^&*AU2018101568A420181129.pdf#####Abstract The present invention provides a kind of flaxseed flake protein extraction process. The present invention can improve the content of crude protein in the flaxseed flake through the adjustment of the ratio between ethanol-ammonium-n-hexane mixture, materials and distilled water, and further improve the protein content in the flaxseed flake, reaching the level over 92%.