Abstract: Agricultural non point pollution has become China's biggest pollutant now. And it is replacing the position of industrial and life pollution. As a result of fast development of scaled livestock farms in recent years, agro organic wastes are the major source of non point pollution, particularly the nitrate phosphate and COD. Chinese technicians invented biogas pond early in the beginning of the 20th century, which can recycling organic wastes and harvest biogas and bio fertilizer, etc. It has been playing the bonding role of Chinese ecological agriculture since the end of 70's of the 21th century. Biogas pond can not only effectively control the pollution caused by organic wastes, but also exert a powerful tool for value adding and providing more employment. So that the stagnate status of number of biogas pond has been broken under the circumstance of shortage of relevant laws and due financial compensation from the government remain, suggesting that in China the remedition of organic wastes from scaled livestock farms, which is still poser worldwide, should explore an approach to ecological agro engineering, i.e., to realize the control within the recycling and utilization process.