Abstract: A strip composting experiment was conducted using sheep manure and wheat straw from meat sheep farms as raw materials for composting.The changes of organic matter, C/N,pH,seed germination index（GI）,and temperature of the composted material were monitored during the composting process to investigate the optimal amount of straw addition for sheep manure strip composting.The results showed that: when fresh sheep manure was composted with 1.5%～4.5% wheat straw, the high temperature retention time was increased by 7～9 days to 26～28 days, and the maximum temperature was increased by 4 ℃ to 63 ℃.Which can accelerate the evaporation rate of pile water and reduce the water content of pile water 8.08%～31.06%;and reduce the pH value of compost products, from 9.12 to 8.88.The seed germination index can be increased by 21.85%～33.93%,and the C/N of compost products can be increased by 10%～30%.adding 1.5%～4.5% of wheat straw when composting fresh sheep manure could increase the high temperature retention time by 7～9 days to 26～28 days and increase the maximum temperature by 4 ℃ to 63 ℃;accelerate the evaporation rate of water from the pile and reduce the water content of the pile by 8.08%～31.06%;reduce the pH value of the compost product from 9.12 to 8.88;and improve the seed germination index 21.85%～33.93%;can improve the C/N of compost products 10%～30%.From this, it can be seen that adding 1.5%～4.5% of wheat straw can accelerate the speed of sheep manure decomposition, but when the amount of straw added is greater than 1.5%,the C/N of compost products would be greater than 20,and the decomposition and utilization of microorganisms are not used.Therefore, the best addition amount of wheat straw is 1.5% when sheep manure is composted.The results would provide technical support to optimize the technical process of sheep manure composting and improve the decomposition rate of sheep manure composting.