Swing type power generation device based on arm swing

The invention relates to a swing type power generation device based on arm swing, which comprises a shell, an auxiliary power assembly and a power generation assembly, and is characterized in that the shell comprises an upper shell and a lower shell, and the upper shell is filled with liquid; the auxiliary power assembly comprises a first auxiliary power assembly and a second auxiliary power assembly; the upper shell, the first auxiliary power assembly, the lower shell and the second auxiliary power assembly are sequentially connected end to end to form an annular structure. The power generation assembly comprises a permanent magnet and a coil, the permanent magnet can move in the lower shell, and the coil is wound on the outer surface of the lower shell. Compared with the prior art, the device is of an annular structure on the whole, can be conveniently arranged on a wearable accessory in a sleeving mode, conforms to the arm swing rule and is high in peak power; the lower shell adopts the brachistochrone des