NOVELTY - Flour-containing mushroom cultivating material comprises straw, cottonseed hull, calcium superphosphate, gypsum, lime, rice, potato powder, flour, radix Clematidis, caulis Trachelospermi, pawpaw, dried ginger, radix Aconiti carmichaeli, cassia twig, nutrition additive, and vinegar. The nutrition additive comprises urea, coix seed oil, sodium selenite, butyl sebacate, dolomite powder, fermented soybean meal, radix Sophorae flavescentis, and tea leaves.    USE - Flour-containing mushroom i.e. Agaricus blazei cultivating material.    ADVANTAGE - The flour-containing mushroom cultivating material realizes waste utilization, reduces the cost of raw materials, resource waste, and environmental pollution, has simple raw material processing, thus, saving labor management, achieves high production yield, and uses little amount of sodium selenite as decontamination agent, which reduces the cadmium content in mushroom.    DETAILED DESCRIPTION - Flour-containing mushroom cultivating material comprises 60-65 pts. wt. straw, 25-30 pts. wt. cottonseed hull, 0.8-1 pt. wt. calcium superphosphate, 1-1.5 pts. wt. gypsum, 1-1.5 pts. wt. lime, 15-18 pts. wt. rice, 20-22 pts. wt. potato powder, 12-15 pts. wt. flour, 1-2 pts. wt. radix Clematidis, 0.9-1.2 pts. wt. caulis Trachelospermi, 2-2.5 pts. wt. pawpaw, 1-2 pts. wt. dried ginger, 1-1.2 pts. wt. radix Aconiti carmichaeli, 2-2.3 pts. wt. cassia twig, 4-5 pts. wt. nutrition additive, and 1-2 pts. wt. vinegar. The nutrition additive comprises 0.4-0.5 pt. wt. urea, 0.5-0.6 pt. wt. coix seed oil, 0.08-0.1 pt. wt. sodium selenite, 0.3-0.4 pt. wt. butyl sebacate, 3-4 pts. wt. dolomite powder, 8-9 pts. wt. fermented soybean meal, 1-2 pts. wt. radix Sophorae flavescentis, and 0.8-1 pt. wt. tea leaves. It is prepared by adding radix Sophorae flavescentis and tea leaves with 4-5 times water, extracting for 30-35 minutes, filtering the residue, adding the obtained extracting solution with dolomite powder and fermented soybean meal, mixing and stirring, drying, adding the rest materials, and uniformly mixing to obtain the nutrition additive. An INDEPENDENT CLAIM is included for preparation of flour-containing mushroom cultivating material comprising adding radix Clematidis, caulis Trachelospermi, dried ginger, monkshood, and cassia twig with 4-5 times water, extracting for 40-50 minutes, filtering and separating the residue to obtain extract solution, adding potato powder, flour, vinegar, and water, kneading, drying and crushing to obtain mixture A, cutting pawpaw into blocks and beating to obtain material B, adding lime with 35-40 times water, soaking for 2-3 minutes to obtain lime water, cutting straw, mixing with cottonseed hull and rice, adding lime water, soaking for 3-4 hours, adding mixture A, material B, and rest materials, mixing and stirring, spraying with water, such that water content reaches 60-65%, adding the resulting material into polypropylene plastic bag, and steam sterilizing at 100 degrees C to obtain the product.