The invention discloses a text information oriented sensitive word filtering method. The filtering method comprises the following steps: (1) receiving text information of a user, verifying whether a data format of the text information is correct, returning to the step (1) if the data format verification fails to pass; or shifting to the step (2) if the verification is passed; (2) performing semantic analysis on the text information: extracting a word group from the text information, matching in a semantic analysis library to obtain term weights of the word group; re-ordering all word groups of the text information according to term weights, and converting the ordered text information into an array format; (3) filtering sensitive words in the text information in the array format; returning the matched sensitive words to the user if the sensitive words are existent; or returning empty information to the user if the sensitive words are nonexistent. The sensitive words can be classified based on the term weights, and the classified sensitive words can be further classified according to letter types, so that the filtering speed of the sensitive words is effectively improved.