Preparation method and application of red rice bacillus natto powder and microcapsule preparation of red rice bacillus natto powder

The invention discloses a preparation method and application of red rice bacillus natto powder and a microcapsule preparation of the red rice bacillus natto powder. Residual red rice dregs left after monascorubin is extracted is taken as a main culture medium, and bacillus subtilis natto subspecies are inoculated to ferment and produce the red rice bacillus natto powder. The red rice bacillus natto powder has the function of reducing blood fat, and can be used as food or a food additive for preparing food or healthcare food for preventing middle-older diseases such as atherosclerosis.