As one of the earliest cities in the development of processing trade in my country, Dongguan has a long history of processing trade development and is relatively developed. In recent years, due to the continuous weakening of traditional processing trade advantages, Dongguan has actively promoted the transformation and upgrading of processing trade, and its process has also attracted attention. This article combines the connotation of transformation and upgrading, analyzes the status quo and existing problems of the development and transformation and upgrading of Dongguan's processing trade, and puts forward relevant countermeasures and suggestions.