A method of processing food from plants and processing apparatus thereof is provided. The cost effective method includes selecting, preliminary processing, soaking, wind drying, cool drying, coarse pulverizing, and fine pulverizing into nanometer scale food powder. The food powder can be easily consumed by human being. It can be preserved for a prolonged period of time. It is nutritious. Moreover, the food powder is easy to store and transport in a space saving manner.
