The invention discloses mochi bread and a preparation method, and belongs to the technical field of baked foods. According to the method, waxy cassava starch, pre-gelatinized hydroxypropyl distarch phosphate, high gluten flour, mozzarella cheese, sugar, eggs, oil, a leavening agent and a bread improver are used as raw materials. The method is characterized in that dough forming is conducted by a high-speed shearing and homogenizing method, so that the mochi bread is obtained. The waxy cassava starch (amylopectin is greater than 95%) is selected to replace modified starch to make the mochi bread, and the mochi bread is soft and glutinous in taste and natural in flavor. On the other hand, the waxy cassava starch, the pre-gelatinized hydroxypropyl distarch phosphate, the mozzarella cheese and the bread improver are adopted, an effective formula is optimized, and an ultra-high-speed shearing and homogenizing method is combined, so that the starch aging phenomenon is effectively improved, and the taste of the product is greatly improved.