The hand-held electric flexible shaft for driving the brush on ventilation duct to clean with dry cleaning is a common practice in the dry type cleaning industry, that is using high power dust trapping device make inside of pipegenerated negative pressure and high speed airflow, the other side with high speed rotate to beat inner wall of pipe, which could accumulate dust from the tube wall. namely in the wind tube remote installation of high power dust trapping device to be cleaning the air pipe negative pressure is generated in the high-speed airflow, at the other end by high-speed rotating electric brush beat duct inner wall, will accumulate dust from the tube wall. The dust will be inhalation of dust trapping device filter unit by high speed airflow. so as to achieve the purpose of cleaning duct. The flexible shaft cleaning equipment integrated drive shaft work, camera, video surveillance system, the control inspection and cleaningrobot, combo end of the pipe, air duct active dust suction and cleaning various functions together, with powerful function, flexible and convenient in use