A text input method, a text input device and a terminal apparatus are provided. The method includes: sampling a sliding touch trajectory received by a terminal apparatus to obtain a plurality of sampling points, and recording sampling information of each sampling point; determining one or more candidate keys corresponding to each sampling point based on the coordinate information of each sampling point, and filtering the sampling points according to the candidate keys to obtain effective sampling points; determining a skip probability of each effective sampling point and an occurrence probability of a candidate key corresponding to each effective sampling point; obtaining candidate words according to combinations of candidate keys corresponding to the effective sampling points, and determining a candidate probability for each candidate word according to the skip probability and the occurrence probability; and outputting the candidate words in a descending order of candidate probabilities of the candidate words.