The present embodiment relates a complete nutritious food product that eliminates the need for adjustment of nutrients according to each category of age, gender, and physical activity level, and enables eating of a complete nutritious food product satisfying the DRIs only by adjusting the amount (calories) of foods, and a providing system thereof. As a result, users who receive meals can easily take the complete nutritious food product, are freed from the trouble of nutrition management, and can improve their health. The invention also relates to a complete nutritious food product-providing system and a nutrition calculation device for a complete nutritious food product.