In this paper, we would like to introduce our experience on isolating a strain named HS-MP12 capable of degrading methyl parathion and p-nitrophenol from a long-term organoposphate pesticides of the polluted soil in Hubei Xiantao Pesticide Works. Methyl parathion is a kind of highly toxic organophosphate insecticides and widely used in agriculture to control the pests. The main intermediate product of methyl parathion is p-nitrophenol, a certain kind of aromatic compounds, which is less toxic than methyl pa...