Energy-saving refrigerators are increasingly being used.Especially after the country issued the energy-saving and people-benefiting policy,the energy-saving requirement of refrigerator was improved,and the cost of energy-saving refrigerator also faces the new challenges.This paper mainly investigated the application of D type tube evaporator in horizontal refrigerator;the application of D type tube evaporator achieved 7% energy-saving effect,and improved the production efficiency of horizontal refrigerator and quality of product.