An injection molding machine includes: a mold clamping unit that moves a movable platen that supports a movable mold to a stationary platen side that supports a stationary mold to apply a first mold clamping force from a movable platen side to the movable mold and the stationary mold; an injection unit that injects a material into a gap between the movable mold and the stationary mold; and a compression unit that applies a second mold clamping force from the stationary platen side to the movable mold and the stationary mold.