The invention provides an integrated type injection molding machine capable of mixing and modifying. The integrated type injection molding machine comprises an extruding unit, an adapter unit and an injection molding unit, wherein the adapter unit is arranged between the extruding unit and the injection molding unit. The extruding unit is provided with an extruding hopper, a long fiber charging hole and an extruding screw, wherein the mouth of the extruding hopper is provided with a solenoid valve or a switch device, so that the extruding hopper of the extruding unit has a synchronous and intermittent charging function; and the extruding unit is matched with the adapter unit, so that mutual matching of the extruding unit and the injection molding unit can be guaranteed. The adapter unit comprises a material storage device and a pressure boosting device, and is used for realizing material connecting and pressure transformation; and the injection molding unit is provided with an injection molding hopper, an injection molding screw and a mould closing device. According to the integrated type injection molding machine capable of mixing and modifying provided by the invention, extrusion molding and injection molding are integrated, so that modifying extrusion of a high polymer material and injection molding of a product can be directly completed, and therefore, product processing processes are greatly reduced, production efficiency is improved and energy consumption is reduced.