Provided is an infusion pipe which can obtain a flow rate higher than that of a conventional product and can easily join with a cannula fitted to an eyeball. This infusion pipe (10) is to be used joined to a cannula (20) fitted to an eyeball in ophthalmological surgery, the infusion pipe (10) has an insertion portion (11) to be inserted during joining with the cannula into the inside of a cannula penetration portion (21a), which is a portion of the cannula (20) that penetrates the eyeball, and the cross-section of the insertion portion is an arc shape with a portion of the circle cut out.
