<正>The mandarin canning industry has a large consumption of water,which increase the production costs of companies,as well as contaminate the environment for the large amounts of discharged wastewater.The effect of different filtration treatment on sensory,physical and chemical index of low-contaminated discharged water from mandarin canning were studied in this paper.The results showed that the sensory,physical and chemical indexes were improved to varying degrees after the different filtration treatments.The joint treatment of cloth bag,activated charcoal and fine filtration could most efficiently improve the quality of discharged water. Disinfection with chlorine could control microbial index of discharged water efficiently.When the concentration of residual chlorine was above 0.5～1.0 mg/L,the total bacterial count in discharged water was below 10 cfu/ml, the E.coliform Group in discharged water was not detected.The low-contaminated discharged water from mandarin canning could be reused as delivery water in automatic segments grader and launder after the joint treatment of cloth bag filtration,activated charcoal absorption,fine filtration,and disinfection with chlorine.