The application of polymer fishery materials in facility culture and marine fishery is more and more extensive, so it is necessary to study its hydrodynamic characteristics. The polymer knitted netting with different solidity ratio and wire thickness was used for the flume test, with inclined angle changing from 0 °to 90 ° and the flow velocity set from 0.3m/s to 1.3m/s at the gradient of 0.1m/s. In order to reduce the influence of wake flow and turbulence on the test results, the streamlined frame was used in fitting out .The test results are as follows: (1) the drag coefficient increases with the increase of the solidity ratio when the netting is normal to the water flow and decreases with the increase of the solidity ratio when the netting is parallel to the water flow. (2) The drag coefficient is decreased gradually with the increase of Reynolds number. When the netting is normal to the velocity of fluid movement, the drag coefficient is steady in the range of 1 300＜Re＜2 000.When the netting is parallel to the velocity of fluid movement, the drag coefficient changes little after Re>1500. (3) The drag coefficient increases with the increase of the angle of incidence and finally tends to be stable. (4) The lift-drag ratio (K) increases first and then decreases with the increase of inclined angle in general, with the extreme value between 20 °and 30 ° and the maximum value about 0.41. (5)When the netting is normal to the water flow, in the range of 1 000＜Re＜2 000, the wire thickness has little effect on the drag coefficient, and when the netting is parallel to the water flow, the drag coefficient of the netting with thicker wire is larger. The test results show that the drag coefficient of the netting is related to the solidity ratio, the wire thickness and the Reynolds number. This test provides a theoretical basis for the design improvement and application of polymer fishing netting in the future.