Washing method and device for dish washing machine and dish washing machine

The embodiment of the invention provides a washing method and device for a dish-washing machine and the dish-washing machine. The dish-washing machine comprises a spraying arm used for washing tableware in the dish-washing machine, and the washing method comprises the following steps: controlling the spraying arm to spray a washing medium to the tableware at the initial washing strength; acquiring an image of tableware; determining whether the tableware shakes or not according to the image; adjusting the initial cleaning strength to determine the target cleaning strength corresponding to the critical point where the tableware does not shake and shakes, so that the situation that the tableware is likely to shake and collide under spraying and may be scratched or even broken under the condition that the cleaning strength is too high is avoided; and washing the tableware with the maximum cleaning strength within the range that the tableware cannot be damaged. The cleaning efficiency is improved, and the cleaning