Effect of inorganic salt modification on efficiency of zeolite barrier to control phosphorus and nitrogen release from sediments was analyzed.The results show that :( 1) Sorption of ammonium on zeolite was influenced less by modification of NaCl or CaCl₂.However, in comparison to natural zeolite, NaCl modification zeolite will release more Na^+ and less Ca²⁺, and CaCl₂ modification zeolite will release less Na⁺ and more Ca²⁺.(2) The efficiency of zeolite barrier to control ammonia release will be influenced little by modification of NaCl or CaCl₂.However, the efficiency of zeolite barrier to control phosphorus release will be greatly affected by modification of NaCl or CaCl₂, and in order of CaCl₂ modification zeolite > natural zeolite > NaCl modification zeolite.(3) The mechanics of zeolite barrier for controlling ammonia release is physical sorption and ion exchange, and zeolite barrier reduces phosphorus release rate depends on its trapping and immobilization of Ca²⁺ that was released from zeolite.