As an important means to promote the digital transformation of enterprises，cities and countries and promote the development of digital economy，digital twin technology has established a universally applicable theoretical and technical system and has been applied in product design and manufacturing，engineering construction，urban management and other disciplines.By combing the development status of digital twin technology，this paper summarizes the shortcomings of the current digital twin technology，including the problems in data acquisition，data fusion，information security and multi-system interaction，and analyzes and sorts out the existing solutions in various industries.It is hoped that it can be used as a connecting link in the field of digital twin technology and help its commercialization process，and accelerate the development and application of digital twin.