The invention provides a text style migration technology-based character beautifying method, which comprises the following steps of S1, acquiring a first input text of a user, extracting keywords in the first input text, and performing label classification on the keywords; S2, obtaining a second input text of the style requirement input by the user, and judging a theme to which the style requirement belongs through the language model; S3, extracting and describing a plurality of corpus texts conforming to the same style theme through the language model, and performing sorting processing; S4, according to the label type to which the description main body belongs, introducing a related description main body with close relevance, and according to a corpus text with the related description main body, extracting and taking the corpus text as a supplementary description text; and S5, outputting a target text of a second writing style having the same semantics as the first input text. According to the method, the conversion of the text writing style is realized, the self-adaption problem in the field of the text writing style is effectively solved, and the accuracy of the conversion of the text writing style is improved.