Choosing a school for postgraduate entrance examination should not only consider the matching degree of majors, but also consider the strength and resources of the school. It is a good choice for Nanjing University of Posts and Telecommunications to take the postgraduate entrance examination for big data major, because Nanjing University of Posts and Telecommunications has a strong strength and reputation in the field of information and communication engineering. The School of Information and Communication Engineering of Nanjing University of Posts and Telecommunications has a certain research strength in the fields of big data and artificial intelligence, and has a good faculty and experimental conditions. Considering the professional background and resource advantages of Nanjing University of Posts and Telecommunications, it is a more suitable choice to choose Nanjing University of Posts and Telecommunications for big data postgraduate entrance examination. Of course, the final choice needs to be based on personal interests and development planning, and comprehensively consider the characteristics and conditions of each school, as well as the adaptability of the professional direction provided.