Wall corner beautifying and adjusting device and method thereof

The invention discloses a wall corner beautifying and adjusting device which comprises an upper fixing strip, a lower fixing strip, an adjusting assembly arranged between the two fixing strips and a lifting assembly used for driving the adjusting assembly to move up and down. An inner scraping plate is welded to one end of the connecting rod, an outer scraping plate is welded to the other end of the connecting rod, the lifting assembly comprises a connecting column, a stand column and a rotating column, the connecting column is used for fixedly connecting the two fixing strips, the stand column penetrates through the two fixing strips and is in bearing connection with the fixing strips, and the stand column is in transmission connection with the rotating column. According to the wall corner beautifying and adjusting device and method, operation can be conducted on an inner wall corner and an outer wall corner through the inner scraping plate and the outer scraping plate, the inner scraping plate or the outer