There is provided a component mounter including: a storage which stores information related to a tape feeder and information related to a carrier tape pitch-fed by the tape feeder; a detector which detects a state where the carrier tape becomes close to a component shortage; a determiner which determines whether to perform predetermined processing with respect to a termination portion of the carrier tape based on information related to the tape feeder and information related to the carrier tape which are stored in the storage, in a case where a state where the carrier tape is close to a component shortage is detected by the detector; and a notifier which notifies an operator of contents of the predetermined processing, in a case where the determiner determines that the predetermined processing is supposed to be performed with respect to the termination portion of the carrier tape.