The invention discloses a method for buffering impact between a door and a door frame. When the door is subjected to large pushing force, a sliding bar is extruded with a sliding base; after the sliding base is extruded, a piston releases the pushing force onto oil in a hydraulic cylinder; the oil is pressed into a buffer cylinder; the buffer cylinder is gradually fed with the oil, so that a springback piston is pushed; when the door is opened again, under the effect of a spring, the springback piston is pushed; and the oil in the buffer cylinder returns to the hydraulic cylinder gradually, and the sliding base is reset. Compared with the prior art, the method for buffering impact between the door and the door frame has the advantages that when the door is subjected to large pushing force, and impacts the door frame and a door lock with large impact force, the sliding base is in friction contact with the sliding bar, so that the horizontal impact force is converted into vertical pushing force, and the piston in the hydraulic cylinder is pushed; the oil in the hydraulic cylinder is injected into the buffer cylinder, and the impact force is buffered and absorbed; the door frame and the door lock are protected; and noise which is generated suddenly is also avoided.