T he existance of home industry the other one of waste producer sago palm manure industry.Ones of these home industry which will produce sago palm manure and solid waste these sago palm industry often couse problem to society such as pollution that's why to reduce an envronment pollution a compos thing process is hoping can create a good quality of compos and will not create another problem anyway the goal of research is : of observing the change factor of temperature and pH which impacting composting J?rocess, find out sago palm manure compos quality with water quality, C/N ratio, P, K, KTK knowing the impact cow menure to compos thing process. .Compos is organic materials (organic waste) that has under gone a process of interaction among organism (deteriorating bacterius). (Murbandono. 2000). According to Sukarman 1984 the use of compos is to fix soil structure, material that keep water in the soil and to keep food suplemen for plants.The research was done in April to July 2003, data colletion was done by doing observation and study of literature the materials used were plastic ware, scoap, thermometer, mject:ion; becker glass, EM4, molasses, water, ampas sagu aren, cow manure, dedak. Producere : prepare all media including sago palm manure, dedak, cow manure. To active EM4, manure and moisture. The process is in aerobi condition. The ResuIt of experiment that have been done were as followed: Parameter Start Final ............................................................P1 (50%) P2(25 %) P3 (0%) C/N Ratio 96,56 19,7 17,41 15,44 P-Total (%) no.size 0,2933 0,287 0, 213 C-organic (%) 8.69 23,077 17,31 16,7 KTK (mw/100gr) - 107,85 104,6 98,56 Water quality (%) 92,7 46, 733 46, 42 51,34 N.total (%) 0,09 1,17 0,993 1,097 K (me /100gr) 001 12,89 11.92 10,8 From the experiment a condusion taken that addition of organic material in the form of row manure was made the process better than composting process without cow manure, becausecontain a lot of nitrogen that needed in that process. Is suggested to maintain the tempetature, pH, delocity flow, moisture, kation capascity exchange (KTI<.), C/N ratio, the content of K and P during the process and to keep the the deteurid rating bacteries can fuction efficiently and avoiding bacteries any a death. A side of those it is suggested to do the advantage research with different treatment(more cow menure), to see the effect of the cow menure to the composting process.