The invention discloses an integral resource recycling method of bagasse. In the method, the bagasse is used as a main raw material, and bran is used as an auxiliary material. The method comprises the steps of: weighing and uniformly blending the bagasse and the bran according to a ratio of 3:1, adjusting the water content to be 60-65% and the pH to be 6.0-6.5; packing in a bag, sterilizing, and planting pleurotus geesteranus; picking fruiting bodies of the pleurotus geesteranus; pulverizing dregs of the pleurotus geesteranus into granules of 0.5-1.0cm; adding 5-6% of bran and 0.5% of cane sugar; adjusting water content to be 50-55%; inoculating 0.2% of Saccharomyces cerevisiae and lactobacillus planetarium, and fully and uniformly mixing; delivering the mixture into an ensiling fermenting tank; and compacting, covering, and ensiling for 45 days so that favorable silage ensiling fodder of the pleurotus geesteranus can be obtained.