Petroleum drilling wastewater sampling and detecting device

The utility model relates to the technical field of sewage sampling, in particular to a petroleum drilling wastewater sampling and detecting device which comprises a device body, the device body comprises a cylindrical fixing part, a plurality of fixing assemblies are arranged on the periphery of the cylindrical fixing part, a sampling part is arranged at the top of the cylindrical fixing part, and the sampling part comprises a cylinder. A water inlet is formed in the portion, close to the top, of the cylinder, a water outlet is formed in the portion, close to the bottom, of the cylinder, and a stirring part is arranged at the bottom of the cylindrical fixing part and comprises curved-surface stirring blades used for stirring. According to the utility model, the sampling part is used for sampling petroleum drilling wastewater, and the stirring part is arranged, so that local wastewater can be stirred and mixed, and single water or oil stain can be prevented from being taken, so that the accuracy of subsequent