A debris bin assembly , apt to be applied to a cleaning robot , and comprising: a debris bin housing , comprising: an inner cavity , an air inlet disposed in communication with the inner cavity and configured for being in communication with a debris inlet channel of the cleaning robot , a debris outlet disposed in communication with the inner cavity , and at least one air guide portion , disposed in communication with the inner cavity ; and a debris discharge valve disposed at the debris outlet and configured to open the debris outlet to evacuate debris from the inner cavity in response to a vacuum negative pressure, and to close the debris outlet after the vacuum negative pressure is withdrawn; wherein the at least one air guide portion is configured for being in communication with an external air and configured to guide a debris discharging airflow into the inner cavity in response to the vacuum negative pressure in the debris outlet ; wherein the debris bin housing comprises a top portion , a bottom portion disposed opposite to the top portion , and a side shell connected between the top portion and the bottom portion ; the top portion , the bottom portion , and the side shell are enclosed to form the inner cavity , the side shell is provided with the air inlet and the debris outlet , and the top portion is provided with the air guide portion ; and characterized in that the air guide portion includes an air guide port and a movable valve, and the movable valve is movably disposed at the air guide port to open or cover the air guide port, and the movable valve can open the air guide port in response to the vacuum suction negative pressure at the debris outlet , and the movable valve covers the air guide port after the vacuum suction negative pressure at the debris outlet is withdrawn. a debris bin housing , comprising: an inner cavity , an air inlet disposed in communication with the inner cavity and configured for being in communication with a debris inlet channel of the cleaning robot , a debris outlet disposed in communication with the inner cavity , and at least one air guide portion , disposed in communication with the inner cavity ; and an inner cavity , an air inlet disposed in communication with the inner cavity and configured for being in communication with a debris inlet channel of the cleaning robot , a debris outlet disposed in communication with the inner cavity , and at least one air guide portion , disposed in communication with the inner cavity ; and a debris discharge valve disposed at the debris outlet and configured to open the debris outlet to evacuate debris from the inner cavity in response to a vacuum negative pressure, and to close the debris outlet after the vacuum negative pressure is withdrawn; wherein the at least one air guide portion is configured for being in communication with an external air and configured to guide a debris discharging airflow into the inner cavity in response to the vacuum negative pressure in the debris outlet ; wherein the debris bin housing comprises a top portion , a bottom portion disposed opposite to the top portion , and a side shell connected between the top portion and the bottom portion ; the top portion , the bottom portion , and the side shell are enclosed to form the inner cavity , the side shell is provided with the air inlet and the debris outlet , and the top portion is provided with the air guide portion ; and characterized in that the air guide portion includes an air guide port and a movable valve, and the movable valve is movably disposed at the air guide port to open or cover the air guide port, and the movable valve can open the air guide port in response to the vacuum suction negative pressure at the debris outlet , and the movable valve covers the air guide port after the vacuum suction negative pressure at the debris outlet is withdrawn. <EOS>