Sediment interstitial moisture stratification dynamic sampling device

The utility model relates to a dynamic layering sampling device for interstitial moisture of sediments, which comprises a plurality of sampling pipes, permeation holes are arranged on the sampling pipes, permeation membranes are arranged in the permeation holes, one end of each sampling pipe is closed, the other end of each sampling pipe is open, and the sampling pipes are communicated with the permeation membranes. A water stop clamp and a peristaltic pump are arranged at one end, close to the opening, of the sampling pipe; a clamping plate is arranged between every two adjacent sampling plastic pipes. According to the utility model, the permeable membranes are arranged on the sampling pipes at different heights, so that non-destructive multiple sampling can be carried out, dynamic exchange of soluble substances can be realized, an indoor culture experiment can be combined with a rear-end detection instrument for use, direct detection of samples can be realized, interstitial water parameters can be obtained,