The invention belongs to the technical field of food processing, and particularly relates to nutrient couscous suitable for steamed vegetable and instant rice, as well as a production method and application of the nutrient couscous. The processes are raw materials cleaning, germinating or ungerminating processing, microwave processing, crushing, fermenting or wetting seasonings, and drying. The nutrient couscous is characterized in that the raw materials are selected from grains or cereals such as brown rice, broken rice, rice, corns, millet, green beans, red beans, black rice, soybeans, black beans and kidney beans. The production method comprises the following steps: washing the raw materials, performing the germinating or ungerminating cultivation, crushing and sieving after microwave processing, adding seasonings, hermetically fermenting or wetting the seasonings after uniformly mixing, drying to obtain the nutrient couscous, or wetting couscous according to the appropriate ratio of material to water, adding a small amount of salad oil, mixing the mixture of the water and salad oil in meat slices, lotus root cubes and the like to steam or directly placing the mixture of the water and salad oil into a steaming-boiling bag, sealing, sterilizing, and curing to obtain an instant steamed dish or instant seasoning meal. Compared with the prior art, the nutrient couscous has the characteristics of unique flavor, high content of gamma-aminobutyric acid, high digestibility and the like.