NOVELTY - Preparing Eucommia ulmoides rubber and activated carbon using Eucommia ulmoides comprises e.g. cleaning fresh green E. ulmoides leaves and young blade, pressing to collect pressed material cake and juice liquid, soaking the pressed material cake in alcohol, applying ultrasonic wave, filtering to obtain filter residue and liquor, drying bark of E. ulmoides, smashing, mixing the residue and juice liquid to obtain uniform mixture, fermenting, mixing the resulting mixture, filter liquor and juice liquid, adding activated carbon powder, cooling, and extracting.    USE - The method is useful for preparing E. ulmoides rubber and activated carbon using E. ulmoides (claimed).    ADVANTAGE - The method: can differently treat the E. ulmoides leaves, twigs and bark to destroy the cell structure; can greatly improve the yield and the extraction efficiency of E. ulmoides; retains the medicinal and healthcare effects of the active ingredients; fully utilizes the biomass produced by E. ulmoides cultivation; and provides the activated carbon made from wood material having low content of medicinal and healthcare components, higher porosity, which is suitable in food industry.    DETAILED DESCRIPTION - Preparing Eucommia ulmoides rubber and activated carbon using Eucommia ulmoides comprises (i) cleaning fresh green Eucommia ulmoides leaves and young blade with clean water, using a mechanical pressing process for pressing to collect pressed material cake and juice liquid; (ii) soaking the pressed material cake in 40-50% alcohol for 3-5 hours, applying ultrasonic wave having frequency of 350-370 KHZ for 1 minutes, stopping for 0.5 minutes, then applying ultrasonic wave having frequency of 100-120 KHZ for 1 minute, and stopping for 0.5 minutes, circulating ultrasonic wave applying process for 4-6 times, and filtering to obtain filter residue and filter liquor; (iii) drying the bark of E. ulmoides, smashing into grain size having not greater than 50 meshes, uniformly mixing the residue obtained in the step (ii) and juice liquid obtained in the step (i) according to weight ratio of 2:8:1 to obtain an uniform mixture; (iv) picking fresh green leaves of Eucommia ulmoides, uniformly cutting, mixing with the resulting mixture according to weight ratio of 3:5, stacking at temperature of 35-40 degrees C under relative humidity of 90-95%, and placing in greenhouse for 36-40 hours; (v) fermenting, mixing the resulting mixture, filter liquor obtained in the step (ii), and juice liquid obtained in the step (i) according to weight ratio of 1:3-5:2-3, adding activated carbon powder, which is 3% of to total weight, then applying microwave to make temperature of the mixed liquid to 90-95 degrees C, maintaining for 0.5-1 hour, and naturally cooling; (vi) extracting the cooled mixed liquid using benzene or toluene at temperature of 50-70 degrees C under pressure of 120-140 Mpa by using solvent extraction process, collecting benzene or toluene extract liquid, and recovering benzene or toluene solvent to obtain crude E. ulmoides gelatin, subjecting the crude E. ulmoides gelatin to ethyl alcohol extraction process, purifying to obtain E. ulmoides rubber product, extracting the solvent, filtering the remaining solid residue, and drying; (vii) smashing biomass of E. ulmoides cultivation waste to 20-40 meshes, soaking in 25-35% sodium hydroxide solution at 50-60 degrees C for 3-5 hours, during soaking process, for every 14 minutes applying 400-420 KHZ frequency of ultrasonic wave for 1 minute, and filtering to obtain solid powder, where the waste biomass is dry E. ulmoides leaves and branches, leaf of E. ulmoides leaf, or pruned E. ulmoides leaves and branches; (viii) mixing the resulting solid powder and dry solid residue obtained in the step (vi) according to ratio of 2-4:1, then adding the juice liquid obtained in the step (i), mixing uniformly, adding specific amount of juice liquid, which is 10-15% of the mixture total weight, mixing uniformly, sterilizing at high temperature, inoculating edible mushroom liquid, where inoculation amount is 5%, stacking at temperature of 35-40 degrees C under relative humidity of 90-95% and oxygen content of 5-7%, and fermenting in greenhouse for 36 hours; (ix) after fermentation is finished, blowing air inside the room, then taking out the fermented mixture, and impregnating in 40-50% phosphoric acid solution according to weight ratio of 1:1-1.5 at 70-80 degrees C for 2 hours; and (x) conveying the resulting product into an activation furnace for carrying out activation, when activating, firstly raising the temperature to 180-200 degrees C, and maintain the temperature for 3-4 hours, then continuously raising temperature to 500-540 degrees C, maintaining the temperature for 1-2 hours, cooling, washing with water to be neutral, drying, and smashing into 200 meshes to obtain activated carbon product.