The invention discloses a high-efficiency and energy-saving manganese washing process without arranging a tailing pond and polluting the environment. The mined manganese slime is broken by a manganese slime breaking machine and then is washed by a manganese slime manganese-washing machine to obtain manganese ore, the water for washing the manganese slime enters a tailing slime water collecting tank and separated through a tailing treatment machine, the clean water is reused and the slime is back filled. The invention has the advantages that: firstly, the manganese washing is locally carried out after mining the manganese ore, therefore, the link of manganese ore slime transport is reduced and the production and transportation cost is reduced; secondly, water resources are saved and the pollution to the environment is also avoided due to the recycling of the manganese washing water; thirdly, no tailing pond is required, not only the land occupation is little, but also the original potential safety hazard of production of the tailing pond is overcome and the construction investment is reduced; and fourthly, the manganese slime breaking machine is additionally arranged, therefore, the problem that the large manganese slime cannot enter the machine before or the damage to the manganese washing machine is great is solved, and the ore washing efficiency is greatly improved by 35 percent than the original process efficiency.