The invention discloses a solar controller circuit board cleaning device, comprising a frame, wherein the one side of top of the frame is provided with a moving device, the moving device comprises a first sliding rail, the first sliding rail is provided with a first slider, one side, away from the first sliding rail, of the first slider is provided with a second sliding rail, a second slider is arranged on the second sliding rail, one side, away from the second sliding rail, of the second slider is provided with a first movable rod, one end, away from the second slider, of the first movable rod is provided with an arc baffle, and the arc baffle is in contact with a first circular sleeve. The solar controller circuit board cleaning device has the beneficial effects that an atomizing nozzlemoves back and forth to flush a circuit board on a holding board, and an adjusting device is convenient for washing and drying circuit boards of different heights conveniently, thereby greatly improving the drying and cleaning property, greatly prolonging the storage time of the circuit boards, reducing problems in the use process, and prolonging the service life of the circuit boards.