Preparation method of earthworm liquid fertilizer and earthworm liquid fertilizer

The invention provides a preparation method of an earthworm liquid fertilizer and the earthworm liquid fertilizer, and the preparation method comprises the following steps: placing live earthworms in water with a temperature within an earthworm activity temperature range; the live earthworms are stimulated to promote the live earthworms to secrete secretions, and the live earthworms are stimulated to promote the live earthworms to secrete secretions and release earthworm coelomic fluid; grinding the mixture of the secretions, the body cavity fluid and the water to obtain grinding fluid; mixing the grinding liquid with an enzyme preparation, and carrying out enzymatic fermentation to obtain fermentation liquid; and mixing the fermentation liquor with a microbial inoculum, and carrying out secondary fermentation to obtain the earthworm liquid fertilizer. The earthworm liquid fertilizer contains more active ingredients such as micromolecular earthworm active peptide, humus acid, amino acid and biological enzyme,