The invention discloses an injection molding machine capable of changing the ejection character. An injection molding machine 10 includes an ejector unit 50 configured to eject a molding product from a mold 33. The ejector unit 50 includes a support 51provided on a platen to which the mold 33 is attached, a slidable base52 configured to slide relative to the support51, a transmission mechanism 60 supported by the support 51 and configured to convert an input into an output corresponding to the distance between the support 51 and the slidable base 52 and transmit the output to the slidable base, a drive source configured to cause the transmission mechanism 60 to operate, an ejection member70 configured to move together with the slidable base, and an adjustment mechanism 80 configured to adjust the position of the slidable base relative to the ejection member 70.