NOVELTY - Improving soil organic matter comprises: selecting bamboo fungus, straw mushroom, Stropharia rugosoannulata, Tricholoma lobayense, or Agaricus blazei or Coprinus comatus, crushing agriculture production waste and/or forestry waste, sun drying as base material, and storing, adding 2-4 wt.% lime powder, adding water to water content of 60-70%, piling at weight of 4000-5000 kg and height of 1.0-2.0 m, fermenting for 2-4 times for more than 2 months, and keeping water content to 60-70% to prepare culture material.    USE - Method for improving soil organic matter (claimed) used for high strength organic fertilizer.    ADVANTAGE - The method has economic benefit, increases soil organic matter content and soil fertility, improves zoology, and realizes soil repairing soil and crop fertilization.    DETAILED DESCRIPTION - Improving soil organic matter comprises: selecting bamboo fungus, straw mushroom, Stropharia rugosoannulata, Tricholoma lobayense, or Agaricus blazei or Coprinus comatus, crushing agriculture production waste and/or forestry waste, sun drying as base material, and storing, adding 2-4 wt.% lime powder, adding water to water content of 60-70%, piling at weight of 4000-5000 kg and height of 1.0-2.0 m, fermenting for 2-4 times for more than 2 months, and keeping water content to 60-70% to prepare culture material; taking 0.5-1.5 wt.% base material and additive with nutrient salt of 64.5-75% and 24.5-34.5% to prepare cultivating material, adding water to water content of 60-70%, steam indoor sterilizing at 100?OC for 24-36 hours, cooling to room temperature, inoculating fungus variety, indoor culturing for 40 days for field planting to obtain material, placing soil into tank, sterilizing, building shadow shed, and irrigating; spreading culture material into trench at 15-20 kg/m2 at thickness of 30 cm, piling corrugated mushroom bed, breaking material into fragments of 1-2 cm3, inoculating culture material on surface layer at point interval of 10-15 cm, covering thick culturing material at thickness of 5 cm, scattering layer of 25 kg/ mu calcium or phosphoric acid compound in culture material surface dosage is 25 kg/acre, and applying fertilizer; and covering soil at thickness of 5-6 cm, covering straw, sugarcane or forest falling leaves at thickness of 2-5 cm, sending fungus period management, fungus bud period management, fruiting period management and post-harvest management for preventing and treating diseases and/or pest controlling, continuously rot fermenting for 15-30 days, and uniformly mixing soil layer.