The carrier tape has two functions: first, it is used as a package to carry and store electronic components, and has good sealing when used with the cover tape, which can protect electronic components from pollution and reduce their damage rate; Second, on the automatic mounting equipment, the index positioning hole can be accurately positioned, and the machine can smoothly take out the electronic components for mounting. Carrier tape plays an important role in the automatic mounting process of semiconductor industry. It can reduce production cost, improve production efficiency and shorten production cycle