The invention discloses a chopper safety protecting device comprising a switching lever, a switching pin and a link mechanism. The switching lever is hinged to the base of a harvester body, and the resistance end of the switching lever matches with a transmission component of the chopper so as to control the transmission component to switch between the separation or connection state with a drive component of the chopper; the switching pin is fixedly arranged in a conveying groove of the harvester body so as to form the switching drive force for the lifting synchronous movement of the conveying groove; the power input end of the link mechanism is adaptive to the switching pin so as to transmit the switching drive force to the power end of the switching lever through the power input end. On the basis of guaranteeing the operating efficiency and economy of the whole feeding harvester, the safety of whole harvester can be improved effectively. In addition, the invention further provides a whole feeding harvester with the chopper safety protecting device.