The invention discloses a grape organic cultivating substrate. The grape organic cultivating substrate is prepared from the following materials in parts by weight: 15 to 30 parts of tea
bran, 15 to 30 parts of peanut
bran, 15 to 30 parts of wheat
bran, 10 to 15 parts of seaweed
meal, 10 to 15 parts of shell
powder, 40 to 60 parts of
bentonite, 20 to 30 parts of coconut shell, 50 to 100 parts of rotten leaf soil, 250 to 350 parts of yellow soil, 100 to 200 parts of
sludge, 50 to 100 parts of banana stalks, 1 to 2 parts of
saccharomycetes, 1 to 2 parts of bacillus, 10 to 20 parts of a flocculating agent, 20 to 50 parts of
earthworm powder and the like. According to the grape organic cultivating substrate disclosed by the invention, the benonite, the rotten leaf soil, the yellow soil and the
sludge are utilized as main substrate sources of the grape organic cultivating substrate, heavy
metal elements in the grape organic cultivating substrate can be subjected to
peptide chain chelating through an added
earthworm powder extracting solution to form macromolecules and then can be removed through the flocculating agent, the content of heavy
metal in the grape organic cultivating substrate can be remarkably reduced, and safety of grape planting is increased.