The invention discloses a cleaning device for a medical machine. The cleaning device comprises a cleaning box, a bracket is arranged at the top of the cleaning box, a supporting table is fixedly connected to one side of the bracket, and the top of the supporting table is fixedly connected with a first driving box. According to the cleaning device for the medical machine, a first motor drives a driving disc to rotate, the driving disc drives a driven disc to rotate through a belt, the driven disc drives a threaded rod to rotate, the threaded rod drives a lifting block to rise and fall, the lifting block drives a rotating rod and a connecting plate to rise and fall through a connecting rod, meanwhile, a second motor drives the rotating rod to rotate, the rotating rod drives the connecting plate and a brush to rotate, thus the medical machine on the cleaning table can be scrubbed, and then the medical machine is flushed through a spraying plate; and the whole cleaning device is simple instructure and convenient to use, the medical machine is scrubbed while being flushed, adhering impurities can be cleared, the cleaning quality is improved, and the cleaning effect is ensured.