The invention discloses a method for softening woven bamboo. The method is simple, the processing period is shortened to be 9-10 hours, working efficiency is improved by 11.7%, production cost is reduced by 13.4%, and the natural color and luster of the bamboo cannot be influenced. The method includes the steps that a bamboo billet is soaked in saline water, sterilization and high-temperature dehydration can be achieved at the same time, the cellular structure is changed, and treating fluid can better permeate in the later period; the bamboo billet is subjected to high-temperature sand bath, wet leaves are used for spacing, the bamboo billet is wetted at first and then dried, the fiber structure is softened primarily, and permeability is enhanced; permeability of a softener solution is good, bamboo fibers can be softened quickly, and the bamboo is made pliable, tough, soft, smooth and free of cracking; bamboo filaments can be processed conveniently, the softened bamboo cannot mildew, cannot breed insects and is resistant to high temperatures for a long time, and thus storage and use are facilitated; and at last, by means of medium-temperature drying, moisture is evaporated slowly, moisture again can be avoided, energy is saved, and the environment is protected.