PURPOSE: A breeding method for a long-horned beetle is provided to realize the mass propagation for a long-horned beetle by enhancing the hatching rate of a larva and the emergence rate of the imago. CONSTITUTION: A manufacturing method of an artificial feed comprises the following steps. Irradiate the microwave at 50-60°；C to submerged oaks, dry the oaks until the water content becomes 1-5%, and make sawdust of the oaks by pulverizing it. Mix the sawdust with a pulverulent mixture. A 95-97 wt% of the oak sawdust is mixed with 100 wt% of an artificial feed. The puverulent mixture comprises minerals for breeding long-horned beetles. The minerals are to be selected from one or more from calcium, magnesium, phosphorus, potassium, sodium, iron, manganese, zinc, and copper. The submerged oak is submerged in a mixed solution with vitamins. The mixed solution with vitamins comprises 300 wt% of water, 0.05-0.1 wt% of ascorbic acid, 0.05-0.1 wt% of urine, 0.0005-0.0015 wt% of folic acid, 0.003-0.007 wt% of pantothenic acid, 0.0003-0.0007 wt% of biotin, 0.0003-0.0007 wt% of vitamin B1, 0.0005-0.0009 wt% of vitamin B2, 0.0006-0.001 wt% of vitamin B6, and 0.1-0.3 wt% of inositol. Supply the artificial feed to the hatching larva of the long-horned beetle, and prepare for the last instar larva to pass through the matured larva by breeding the first larva. Pupate the last instar larva to chrysalis. Each of the hatching larva is bred separately in a glass when they are first an instar larva. The pupation is performed at 20°；C with 60% humidity. The pupation is performed at 0L and 24D of periodic illumination. [Reference numerals] (A1) Egg stage at 25°；C for 14 days； (A2) Hatching larva stage at 18-22°；C for 1,350 days； (A3) Pupation stage at 20°；C for 14 days； (A4) Imaginal stage 25°；C for 20-30 days； (B1) Imago(F1)； (B2,B9) Oviposition； (B3,B10) Hatching； (B4) Last instar larva； (B5) Pupation； (B6) Eclosion(F2)； (B7) Adult feeding； (B8) Copulation； (C1) Matching；
