Portable field water sample auxiliary collection device

The utility model relates to a portable auxiliary field water sample collecting device which comprises a longitudinal fixing belt and a counter weight arranged in parallel with the longitudinal fixing belt, the longitudinal fixing belt is provided with a fixing ring which can be mounted at the bottleneck part of the sampling bottle; the upper and lower ends of the counter weight are respectively connected with a top fixing band and a bottom fixing band, and the left and right ends of the counter weight are respectively connected with the long-edge transverse fixing band and the short-edge transverse fixing band; the free end of the short-edge transverse fixing band is provided with a transverse buckle shaped like a Chinese character'ri 'and used for being connected with the transverse fixing band; the top end of the top fixing band is provided with a top B-shaped buckle for connecting the longitudinal fixing band; the bottom end of the bottom fixing band is provided with a bottom buckle shaped like a Chinese