The design of the optical fiber fusion splicer adopts the block surface cutting of the geometric body, and the partial parts of the product mainly enrich the details with the oblique section and the straight face. The main color of the shell is black, with camouflage matching, and the contrast between light and dark is confident and calm. The protection part is made of black soft rubber, which reaches a certain level in environmental resistance design and is suitable for various engineering sites with complex working conditions.