Medical facility cleaning and disinfection device and disinfection method

The invention discloses a medical facility cleaning and disinfection device and a cleaning and disinfection method. A liquid distribution and air distribution plate is arranged at one side, facing a cleaning tank, of the bottom end of an upper cover; primary spray heads are arranged at the bottom end of the liquid distribution and air distribution plate; the liquid distribution and air distribution plate is selectively connected with a cleaning agent supply source, a disinfectant supply source and a hot air supply source; a pollution discharge fast connector is formed in the bottom end in thecleaning tank, a clapboard is arranged in the middle of the cleaning tank, and a plurality of fixing holes for fixing glass tanks are formed in the clapboard; annularly distributed brackets are arranged in any one fixing hole; a primary cleaning head is arranged in the center of each fixing hole, and is selectively connected with the cleaning agent supply source, the disinfectant supply source andthe hot air supply source