The invention discloses a text mode generation method which is suitable for being executed in a computing device. The method comprises the steps that a text library comprising multiple pieces of text data is obtained, and word segmentation processing is conducted on each line of the text data; frequency of occurrence of each word is counted from the text data, high-frequency words are screened out, and the high-frequency words and the frequency of occurrence of the high-frequency words are subjected to associative storage; the high-frequency words in each line of the text data are screened out, and a high-frequency word tuple corresponding to the line of the text data is formed; the dependency degree between any two high-frequency words is calculated according to the frequency of occurrence of all high-frequency words in the text data; a preselected text mode of each line of the text data is generated according to the high-frequency word tuple corresponding to the text data; preselected text modes are corrected according to the dependency degree between the high-frequency words, and the corrected text modes of the text data are obtained; similarity merging is conducted on the corrected text modes, and a text mode library is obtained. The invention further discloses a corresponding text mode generation device and the computing device.