The invention provides household cake flour, belongs to the technical field of processing of foods, and specifically relates to a cake. The cake pre-mixing flour is divided into a bag A and a bag B, wherein the pre-mixing flour bag A comprises 3 to 7% of egg albumen powder, 40 to 46% of white granulated sugar, 0.1 to 0.3% of cream tartar, and 1.0 to 1.4% of baking powder; the pre-mixing flour bag B comprises 40 to 48% of low-gluten cake flour, 1.3 to 1.8% of powdered oil, and 3.9 to 4.3% of defatted soybean powder. The method comprises the steps of adding water to the flour of the bag A during preparing the cake; agitating for 5 to 10 minutes at a slow speed; quickly agitating for 4 to 8 hours after the sugar is completely dissolved; adding the flour bag B; agitating for 1 to 3 minutes; rapidly filling into a die; baking for 17 to 25 minutes through a stove at the temperature of 160 to 200 DEG C, so as to obtain the cake. According to the method the raw materials for preparation are prepared in advance; the bags A and B are simply mixed to obtain the cake; the household cake flour solves the problem that people worry about the preparation way and the mixing ratio of other auxiliary materials during preparing the cake at home can be solved; the household cake flour is suitable for being popularized to family.