The invention discloses a refrigeration equipment environmental-friendly energy-saving structural layer and application thereof. The structural layer consists of an HFO (Heavy Fuel Oil) foamed rigid polyurethane foamed layer and a modified aromatic vinylite lining plate, wherein modified aromatic vinylite is an ethylene-propylene-diene monomer toughened vinyl cyanide-aromatic ethylene polymer; in the modified aromatic vinylite, the weight content of the ethylene-propylene-diene monomer toughened vinyl cyanide-aromatic ethylene polymer is 20-95%. By adopting the refrigeration equipment environmental-friendly energy-saving structural layer disclosed by the invention, the problem that material cracking can be caused if an HFO foaming agent and an ABS (Acrylonitrile Butadiene Styrene) lining plate are used in cooperation in conventional refrigeration equipment is avoided, the environmental-friendly and energy-saving properties of the refrigeration equipment are improved, and meanwhile as the structural layer still has an ABS material, good molding performance is maintained, and diversity and high-end taste orientation of structural design of refrigeration equipment are achieved.