The disclosure provides a method for detecting the conveyance status of a banknote, comprising; detecting whether the banknote reaches a first position in a banknote passage within a first predetermined time; detecting whether the banknote reaches a second position in the banknote passage within a second predetermined time when it is determined that the banknote has reached the first position (S14); determining whether the status of the banknote at the first position is changed from Banknote Detected to Banknote Undetected when it is determined that the banknote is withdrawn when it is determined that the status of the banknote at the first position has changed from Banknote Detected to Banknote Undetected (S18). This application can increase the possibility of the banknote processing device in detecting whether the banknote is withdrawn. Meanwhile, the disclosure provides a device for processing a banknote.