[Problem] Provided is an infusion pump in which a forward rotation and a reverse rotation of a rotor of a drive motor can be detected so as to be able to safely deliver drug to a patient.An infusion pump 1 includes a drive motor 61, a liquid delivering drive unit 60 that delivers drug inside an infusion tube by Dressing an infusion tube 200 on account of a rotor of the drive motor 61 in forward rotation, a rotational direction detection device 700 that generates detection information 780 regarding a rotational direction for judging whether the rotor of the drive motor 61 is in the forward rotation or reverse rotation, and a control unit 100 that judges whether a rotor 161A of the drive motor 61 is in the forward rotation or the reverse rotation based on the detection information 780 regarding the rotational direction obtained from the rotational direction detection device 700.