An injection molding machine includes: an acquisition unit configured to acquire, during a mold opening operation of a mold, at least one of a first measurement value relating to a resistance when a protrusion operation of an ejector pin to release a molding product from the mold in a mold-opened state is performed and a second measurement value relating to a resistance when an accommodation operation of the ejector pin is performed; and an estimation unit configured to estimate an amount of deposition of a mold deposit deposited on the mold, based on at least one of the first measurement value, excluding an element before the molding product is released or lowering a priority of the element, and the second measurement value.