Fish protection-based method for evaluating influence of power station dam removal on habitat quality

The invention discloses a method for evaluating the influence of power station dam removal on habitat quality based on fish protection in the technical field of river ecological restoration of hydropower development, and the method comprises the steps: constructing an evaluation system for restoring river fish protection objects, and obtaining the score and weight of each evaluation index; performing quantitative evaluation on the fishes in the repaired river through scores and weights of the evaluation indexes, and determining target fishes needing to be protected; obtaining hydraulic preference of the target fish in each life stage; habitat hydraulic parameters corresponding to hydraulic preferences before and after dam dismantling are obtained by constructing a water and sediment transportation model and performing hydrodynamic simulation, and a fish habitat quality evaluation model before and after dam dismantling is constructed by utilizing the habitat hydraulic parameters and a fish habitat model; and p