The invention provides a device for cleaning ceramic plates. The device comprises a cleaning tank, a nitric acid preparation tank and a nitric acid cleaning liquid pump; the device is characterized in that the bottom of the cleaning tank is connected with an air pipe which is provided with a connector and connected with an air cabinet, the nitric acid preparation tank is connected with the nitric acid cleaning liquid pump, and the nitric acid cleaning liquid pump is connected with the cleaning tank. When the device is in use, ceramic plates to be soaked and cleaned are vertically arranged inside the cleaning tank by use of the connector on the air pipe, the nitric acid cleaning liquid pump is turned on to feed the nitric acid cleaning liquid into the cleaning tank, and then a valve on the air pipe is switched on so that air can be introduced into the ceramic plates to bubble; as a result, the ceramic plates are cleaned continuously under the actions of soaking in the nitric acid cleaning liquid and air bubbling. The device for cleaning the ceramic plates is simple in structure, low in manufacturing cost, convenient to mount and capable of solving the regeneration problem of the ceramic plates. The device for cleaning the ceramic plates is applicable to the field of cleaning ceramic filters.