How to repair a deep hole in the wall?

Plug the hole first, then level the peeling or peeling place around with tools, and then fill it with plaster. Remember that the hole in the wall must be filled without gaps, so that the effect is good. Then scrape the wall flat with a scraper, without unevenness. Then wait until the plastering is completely dry, then polish the wall with sandpaper and brush the putty powder again. The whole step is the best. The reason for this is: 1. It may be that the dust on the wall is not cleaned up before priming, or the quality of putty purchased is too poor, or the quality of latex paint is not good. At the same time, the workers did not do all the steps in the construction process, resulting in poor quality of the wall itself. 2. It may be that when the putty powder is stirred, the putty powder is stirred unevenly, so small particles appear. After a long time, small particles will fall off and then form small holes. 3, or the indoor humidity at home is high, and the window is not often ventilated at ordinary times, resulting in damage to the indoor wall.