In an injection molding machine of the present invention formed to have a plurality of injection apparatuses connected via a communication channel, a first injection apparatus among the plurality of injection apparatuses includes a display apparatus, a first control apparatus included in the first injection apparatus includes an operation screen input/output unit which obtains operation screen data from another injection apparatus and a rendering attribute converting unit which converts rendering attributes of rendering elements configuring an operation screen to be rendered based on the operation screen data. When an operation screen of the other injection apparatus is displayed on the display apparatus based on the operation screen data, the rendering attribute converting unit makes all or part of the rendering attributes of the rendering elements configuring the operation screen different from rendering attributes when an operation screen of the first injection apparatus is displayed. Thus, the operation screens of the plurality of the injection apparatuses are easily distinguishable.