The utility model discloses an experimental reinforcing apparatus of full water in pond is assembled to PP module, belong to the pond experimental field of full water, its structure includes the plankstake, stull and prop the thick stick, the plank stake includes a plurality ofly, assemble along the PP module that the pool wall in pond is vertical to be arranged in succession all around, the outside that the plank stake on every side of pond was assembled to the PP module all is provided with a plurality of stulls, the stull is fixed mutually with the plank stake, it props the thick stick tobe provided with between stull and the foundation ditch, prop the thick stick and prop the thick stick for stretching out and drawing back, it supports in the stull to prop thick stick one end, the other end supports on the foundation ditch, it is provided with the backing plate to prop between thick stick and the foundation ditch. The utility model discloses have the intensity and the rigidity that improve the pool wall, the planar stability of pond water -logging in the full water process of the test of cell body is ensured in deformation that the lateral pressure of resisting the pond water-logging produced, satisfies the experimental condition of full water, carry out the experiment of full water to the pond before foundation pit backfilling, be convenient for discover leakage point to in time restore leakage point, excavate characteristics such as mending -leakage after having avoided backfilling again.