The invention relates to a cake and a processing process thereof. The cake comprises, by weight, 100 parts of low-gluten flour, 80-100 parts of egg white, 70-75 parts of egg yolk, 80-100 parts of sugar, 15-20 parts of milk, 15-20 parts of salt, 15-20 parts of whole milk powder, 5-10 parts of baking powder, 25-30 parts of honey, 8-10 parts of baking soda, 40-50 parts of oil, 5-10 parts of calcium propionate, 0.1-0.2 part of potassium sorbate and 10-15 parts of water. The cake is formed by fermentation, filling, primary baking, decapping, demolding, cooling, slicing, secondary baking, cooling, quick freezing, sterilization and packaging. The secondary baking process is added in the processing process so that the cake is crisp in taste from outside to inside and is a novel cake. Besides, thecake is attractive in appearance and good in taste, the grease content is low, dosage of a preservative is little, and compounding of calcium propionate and potassium sorbate enables the dosage of the preservative to be reduced and enables a shelf life to be prolonged.