The invention provides a biological bacterium liquid tea leaf fertilizer and a production method. The leaf fertilizer is prepared from the following components in percentage: 0.02%-1.8% of root nodule bacteria, 0.03%-1.5% of nitrogen-fixing bacteria, 0.02%-1.6% of spore bacteria, 0.02%-1.0% of potassium bacteria, 0.03%-1.8% of phosphobacteria, 3%-8% of protein, 0.1%-10% of ethephon, 2.8%-15% of nitrogen, 0.8%-6% of molybdenum, 0.6%-8% of boron and the balance of purified water. The method comprises boiler warming, inoculating, and first-level cultivating time; adding of three kinds of biological bacteria, mixing and second-level cultivating time; second-level cultivating, adding o trace elements and the protein and three-level fermenting; and third-level adding of ethephone, nitrogen and molybdenum, cultivating, bacterium liquid maturating, detecting, delivering and cold storing. After the leaf fertilizer is sprayed to the roots and tops of tea plants, through the life metabolic activities of widespread living beings, infection, transfer, fermentation, a growth hormone function, quick absorption of crops and various nutrients of N, P and K which are supplied to the crops, the crops can be stimulated to quickly absorb and grow fast; and the crop quality and soil fertility are improved, soil contamination is solved, and the fertilizer is a green biological fertilizer.