A method for handling an air duct abnormality of a dust collection equipment, comprising: receiving an air pressure value detected by an air pressure sensor, wherein the air pressure sensor is located in an air path between a blower and a dust filtering apparatus of the dust collection equipment; determining whether an abnormal event occurs in an air duct of the dust collection equipment according to the air pressure value detected in real time; and performing corresponding handling according to the type of the abnormal event, when it is determined that the abnormal event occurs; characterized in that, said determining whether the abnormal event occurs the air duct of the dust collection equipment according to the air pressure value detected in real time comprises: determining that an abnormal event occurs and the abnormal event is that the air duct is blocked, when the air pressure value detected in real time drops to be equal to or less than a set blockage air pressure threshold from normal operating air pressure within a first duration; determining that an abnormal event occurs and the abnormal event is that collected dust is excessive, when the air pressure value detected in real time gradually drops to be equal to or less than a set dumping air pressure threshold, and continuously and gradually drops within a second duration; and determining that an abnormal event occurs and the abnormal event is that the dust filtering apparatus is excessively dirty, when the air pressure value detected in real time drops to be equal to or less than a set excessively dirty air pressure threshold, and keeps stable within a third duration. receiving an air pressure value detected by an air pressure sensor, wherein the air pressure sensor is located in an air path between a blower and a dust filtering apparatus of the dust collection equipment; determining whether an abnormal event occurs in an air duct of the dust collection equipment according to the air pressure value detected in real time; and performing corresponding handling according to the type of the abnormal event, when it is determined that the abnormal event occurs; characterized in that, said determining whether the abnormal event occurs the air duct of the dust collection equipment according to the air pressure value detected in real time comprises: determining that an abnormal event occurs and the abnormal event is that the air duct is blocked, when the air pressure value detected in real time drops to be equal to or less than a set blockage air pressure threshold from normal operating air pressure within a first duration; determining that an abnormal event occurs and the abnormal event is that collected dust is excessive, when the air pressure value detected in real time gradually drops to be equal to or less than a set dumping air pressure threshold, and continuously and gradually drops within a second duration; and determining that an abnormal event occurs and the abnormal event is that the dust filtering apparatus is excessively dirty, when the air pressure value detected in real time drops to be equal to or less than a set excessively dirty air pressure threshold, and keeps stable within a third duration. determining that an abnormal event occurs and the abnormal event is that the air duct is blocked, when the air pressure value detected in real time drops to be equal to or less than a set blockage air pressure threshold from normal operating air pressure within a first duration; determining that an abnormal event occurs and the abnormal event is that collected dust is excessive, when the air pressure value detected in real time gradually drops to be equal to or less than a set dumping air pressure threshold, and continuously and gradually drops within a second duration; and determining that an abnormal event occurs and the abnormal event is that the dust filtering apparatus is excessively dirty, when the air pressure value detected in real time drops to be equal to or less than a set excessively dirty air pressure threshold, and keeps stable within a third duration.