The utility model provides a good equipment of phreatic water structural reform, including top utensil delivery port and insert the deep well of water bottom, set up at the lateral part of deep well and be higher than the intake of water bottom, establish in the deep well to the division board of deep well bottom extension in order to form at least one return water cavity to and setting up the drainage device in delivery port department, the bottom of division board possesses the return water mouth. The utility model discloses among the good equipment of phreatic water structural reform that demonstrates, the blue alga can carry out broken handle in order to form the blue alga piece at the hydrostatic pressure that the deep well bottom formed, and through drainage device to the water thatcontains the blue alga piece deep well of upwards discharging, thereby make the blue alga piece can be directly by the fish in the water, zooplankton and zoobenthos are preyed on, realized handling the efficient ecological of blue alga, the outburst of blue alga has effectively been prevented, the outburst of blue alga has been restrained from the source, controlling in advance of blue alga cost is reduced, high -efficient continuous cycle has also been realized simultaneously to the oxygen content of lower floor in the water has been improved.