The utility model discloses a monitoring device for the operation of a gas permeable brick, and relates to a device for monitoring the operation conditions of the gas permeable brick in a molten steel refining process. The monitoring device comprises a flow rate meter, a gas flow selecting switch, a digital processor and alarms, wherein the flow rate meter is arranged on a ventilating pipeline of the gas permeable brick, and connected with the digital processor by the gas flow rate selecting switch; the flow rate meter is used for transmitting the measured flow rate data to the digital processor; the digital processor is respectively connected with the alarms for receiving different alarm signals. According to the monitoring device for the operation of the gas permeable brick disclosed by the utility model, the gas permeation volume of the gas permeable brick is detected by the flow rate meter which is arranged on the ventilating pipeline of the gas permeable brick, and finally workers can be timely informed of carrying out flow rate adjustment in an alarm mode, so that the stirring condition of the molten steel can be accurately judged, and therefore, the monitoring device is intuitive.