The invention discloses novel bean water biological power fermentation liquor and a preparation method thereof. The novel bean water biological power fermentation liquor comprises the following raw materials of soybeans, water and probiotics, wherein the probiotics comprise the following components of candida lipolytica, bifidobacterium adolescentis, lactobacillus bulgaricus, bifidobacterium bifidum, lactobacillus acidophilus and lactococcus lactis. The novel bean water biological power fermentation liquor has the beneficial effects that the novel bean water biological power fermentation liquor is prepared by adding the probiotics to bean water, and the novel bean water biological power fermentation liquor contains rich trace elements of copper, phosphorus, ferrum, potassium, calcium, zinc, molybdenum and the like, and further contains flavone, saponin, folic acid, vitamins, 16 amino acids necessary for human bodies, and rich probiotics; the power fermentation liquor as a raw materialcan be made into foods, a biological feed, a biological fertilizer, environmental-friendly fermentation liquor and the like, can provide rich nutrient components, and can also effectively decompose the nutrient substances of other raw materials, absorption is facilitated, the conversion rate of the raw materials can be increased, and pollution to environment can be reduced.