Piston type opening pipe inserting benthonic animal nature conservation device and application

The invention discloses a piston type opening pipe inserting benthonic animal nature conservation device which comprises a pipe cap, a pipeline, a piston and a piston rod. The pipe cap is installed at the bottom end of the pipeline, the piston rod exposed out of the top end of the pipeline is fastened with the piston to enable the piston to be placed at the bottom of the pipeline, and a water through hole is arranged on the wall of the pipeline. The piston type opening pipe inserting benthonic animal nature conservation device sufficiently uses intertidal zone bottom temperature and relative stability of a water environment, provides a neterogeny space which is easy to enter, a stable and appropriate habitat and a natural enemy avoiding field for benthonic animals, is applicable to settling, and contributes to passing of extreme climate of the benthonic animals. The piston type opening pipe inserting benthonic animal nature conservation device is low in cost, simple in manufacture, convenient to transport, easy to install, free of damage to mangrove forests, wide in application scope and capable of widely used for spontaneous recovery of the benthonic animal in the habitat such as the mangrove forests and achieving sustainable development of an ecosystem.