Waste liquid collecting cabinet for laboratory

The utility model provides a waste liquid collecting cabinet for a laboratory, which comprises a cabinet body and a storage barrel, and further comprises a blanking hopper arranged on the cabinet body and a movable cart arranged in the cabinet body and used for placing the storage barrel, the storage barrel is positioned right below the blanking hopper, and the storage barrel is positioned right below the movable cart. A guide part is arranged between the movable cart and the inner bottom of the cabinet body and used for assisting the movable cart to longitudinally move to be placed into the cabinet body and taken out of the cabinet body, and a detection part in contact fit with the storage barrel is arranged on the inner wall of the cabinet body and used for detecting the liquid level height in the storage barrel. The amount of waste liquid in the storage barrel is detected through the detection part, a user is reminded to discharge the waste liquid in the storage barrel, the phenomenon that the waste liquid