The invention relates to a method for inducing a new root of a rubber tree. The method comprises the step of bushing the root of the rubber tree into a coconut husk powder nutrition bag to obtain a tender new root of the rubber tree, wherein the diameter of the root of the rubber tree is 1.0-1.5cm; and particularly, the method comprises the following steps of: sawing off the tail part of the root, leaving 10-12cm of the root, and bushing the root into the coconut husk powder nutrition bag by 8-10cm; sterilizing the coconut husk powder at high temperature, and spraying 20-30L of 400-800-folded solution of 50% carbendazim wettable powder or 400-800-folded solution of 50% chlorothalonil wettable powder to sterilize and prevent fungi; arranging the coconut husk powder nutrition bag in a small groove which is 15-20cm wide, 15-20cm deep and 40-60cm long, wherein the diameter of the coconut husk powder nutrition bag has the diameter being 10-15cm and the height being 15-20cm; and cultivating the root in the coconut husk powder nutrition bag for 50-80 days, and callusing the sawed part of the root in the coconut husk powder nutrition bag to grow the tender new root. The method for inducing the new root of the rubber tree, disclosed by the invention, has the advantages of simple process flow, low production cost, new strong and clean induced root and greater application value.