Connector type designation is the basis for customer purchasing and manufacturer organization production. In the connector industry at home and abroad, there are two ways of product model naming: one is to add the number with the letter code, so as to reflect the main structural features of the product in the model naming. The advantage of this approach is that it is easy to identify, but the arrangement is too long and too complex, and with the miniaturization of the connector, it brings a lot of difficulties to print. At present, this approach is still popular, and in some industry standard or GB provisions, such as SJ2298-83 (printed circuit connector), SJ2297-83 (rectangular connector) and SJ2459-84 (ribbon cable connector), GB9538-88 (ribbon cable connector) etc.. Because of the increasing diversity of connector structures, it is becoming more and more difficult to use a naming rule to cover a class of connectors in practice. Another way of thinking is to use the Arabia digital combination. The advantages of this approach are simplicity, ease of computer administration and marking of small products. International major connector manufacturers are currently using this approach. It can be expected that the naming method for each manufacturer to reflect its own characteristics will gradually replace the method of unified naming of certain naming rules under the planned economy system.