A kind of lactobacillus plantarum multiplication agent, it is by the enzymatic hydrolysis mixture after protease or the reaction of the mass degradation vegetable protein containing protease, protease therein is one of plant rennet, animal protease or microbial protease or mixture, and the vegetable protein for degradation is one of soybean protein, mung bean protein, Chickpea Protein, Broad Bean Protein, pea protein, hyacinth bean albumen, wheat gluten or mixed protein. A kind of fermented product added with afore-mentioned plants lactobacillus multiplication agent, the lactobacillus plantarum viable bacteria in the fermented product reach 1.0×10 9cfu/g. A method of the fermented product being made, steps are as follows: (1) major ingredient and lactobacillus plantarum Mixed Microbes (2) it sterilizes (3) it is inoculated with, ferments.
