There is no such thing as a better splint or cast, but it is determined by the different indications for splinting and casting. Splinting is relatively more reliable in the early stage, but it is only suitable for fixation of long bones and a few wrists and metacarpals, but it is relatively less effective for fixation of joints. Splinting is even less effective in areas with bony prominences, and the splint can be loosened at any time and needs to be adjusted at any time. In comparison, plaster is the best fit, but plaster is less secure than splint. Therefore, splint and plaster fixation have their own advantages and disadvantages, and it is not absolute which one has the best effect.