The invention discloses a soil conditioner for blueberry cultivation. The soil conditioner comprises the following components in parts by weight: 100-120 parts of a bioorganic fertilizer, 80-90 parts of fermented bean residue, 20-30 parts of furfural residue, 40-45 parts of turf, 8-13 parts of humic acid, 10-15 parts of moss, 3-5 parts of functional polypeptide, 15-18 parts of a water-retaining agent, 150-180 parts of an auxiliary agent and 10-30 parts of a conditioning agent. The soil conditioner has the beneficial effects as follows: the furfural residue is used for substituting sulfur, so that the cost is reduced, the environment is improved and the pH value of soil is significantly reduced; a functional polypeptide calcium complex can inhibit calcium absorption of a blueberry root system and prevent iron-deficiency chlorosis or death of blueberry; the soil conditioner has the effects of fixing carbon, retaining water, reducing the soil bulk density, increasing the porosity and the like, is high in organic matter content, helps to increase the seed germination rate, promote the root system growth and delay root system aging in the later stage, and is a high-efficiency and environment-friendly soil conditioner for the blueberry cultivation.