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The emission of ammonia in manure high temperature aerobic composting not only polluted the air but also reduced the nitrogen content of organic fertilizer. Therefore, the control of composting process of ammonia volatilization is the key of reducing nitrogen loss and environment ordor emission. In order to study the effect of membrane covered on reducing the emission of ammonia in manure aerobic composting, pig manure and wheat straw were used as experimental materials, and Gore film with selective permeability was used as covering material, the aerobic composting trial was carried out in a lab-scale intelligent membrane-covered aerobic composting reactor system for 27d. There were membrane-covered treatment and control treatment in this trial. Air blown at an hourly interval (flow velocity of 3L/min through the pipe at the bottom of the reactor diffused through the composting material to maintain aerobic conditions. The composting temperature, oxygen content and ammonia concentration were measured during the composting. The results showed that the high temperature duration of the membrane-covered group was longer than that of the control group, and it was more beneficial to kill the harmful pathogens. Compared with the control group, the NH3 emission in the membrane-covered group was decreased by 18.87%. Compared with the peak time of the temperature, the peak time of NH3 peak in both groups was delayed, and the delay time of the membrane-covered group was longer, and the phenomenon that peak value of NH3 lagged temperature was further revealed.