The invention discloses a water body pollution environment monitoring and sampling device, and belongs to the technical field of environment monitoring. A water body pollution environment monitoring and sampling device comprises a sampling box, and further comprises first motors, which are mounted on two sides of the lower end in the sampling box through a bracket; propellers, which are arranged on the two sides of the lower end of the sampling box, and rotating shafts of the propellers are fixedly connected with the output end of the first motor; a second motor, which is mounted at the upper end in the sampling box; threaded rods which are rotationally connected to the two sides, close to the second motor, of the sampling box, wherein the output end of the second motor is fixedly connected with a first gear. When river water is sampled, water at different depths can be sampled at a time, repeated sampling is not needed. The device solves the problem that in the prior art, only water of one depth can be sampled at a time, the sampling efficiency is effectively improved, and the device is high in practicability and suitable for application and popularization.