Miniature water wheel power generation system

The invention belongs to the technical field of hydroelectric generation, and discloses a miniature water wheel power generation system which comprises a shell and a coil, the shell is communicated with a liquid inlet pipe and a liquid outlet pipe, the shell is rotationally connected with an impeller connecting plate, the impeller connecting plate is connected with a magnet and a plurality of impeller blades, and the impeller blades and the magnet are arranged on the inner side of the shell. Liquid enters the shell from the liquid inlet pipe to drive the impeller blades to rotate and then flows out of the shell from the liquid outlet pipe, the coil is fixedly connected with the shell, and the coil cuts magnetic induction lines generated by the magnet to generate power. The coil is fixed, the impeller is used for driving the magnet to rotate for power generation, and the problems that in the prior art, coils are all arranged in the magnet, the structural shape and the positions of all parts of a power generati