A plastic packaging material testing system and method based on an internet of things and cloud technology including a cloud computing center that achieves data communication, data storage and data processing between customers and testing laboratory, computing center includes a private and public cloud. With the function of the internet of things, the testing system modules achieve the automatic acquisition, storage, parsing and transmission of the testing information and testing data. It combines test methods, testing instruments, modern logistics technology and software system together, which solves the problems that current testing instruments cannot achieve the massive test data storage and internet technology applications and avoids the one-time investment on the instruments purchasing and laboratory construction.