Method and system for analysing the weight of text

A system for analyzing the weight of text, the system is applied for analyzing the valence-arousal of text, and the system generates a weight unit table. In the beginning, annotators define a word weight database. The word weight database storages a plurality of data words, each of the data word includes a valence value and an arousal value, and the valence value and the arousal value form a weight unit. The system includes a search server and a calculation server. The search server includes a receive module and a search module. The calculation includes a calculation module. The receive module receives a keyword, a time period and a category of text. The search module searches a plurality of relating reference texts in accordance of the keyword, the time period and the category of text. The calculation module calculates the weight unit table according to each of the relating reference text.