The invention discloses a whole grain porridge rice processing method based on a continuous pulse pressure difference technology. Whole grains are used as main raw materials, and are added or not added with mixed beans as processing raw materials, and the whole grains and the mixed beans can be matched in proportion optionally. The method comprises the following steps: adding water to moisten rice; tempering at middle temperature; carrying out continuous pulse pressure difference expansion; drying; and carrying out enzyme deactivation by using medium-far light spectra. The shape of the whole grain porridge rice is slightly greater than common whole grain particles, the surface of the whole grain porridge rice has rehydrated micro-expansion ducts, the whole grain porridge rice can be cooked in a rice cooker or a porridge pot, the quickly cooked whole grain porridge rice and high milled rice can be cured simultaneously, the taste, the flavor and the character of the product are good, and the whole grain porridge rice has aromatic flavor, and does not have bad flavor. After the whole grain product treated by the process is packed under vacuum or in a nitrogen charging manner, the shelf life of the whole grain product can reach and up to 1 year.