The invention discloses a text splicing method and a device thereof. The method comprises the following steps of: obtaining a to-be-spliced current text fragment, obtaining an average sentence lengthcorresponding to the current text fragment, obtaining a first semantic score, in a semantic model, of the current text fragment, and obtaining a second semantic score, in the semantic model, of a candidate sentence comprising the current text fragment, wherein the current text fragment is a starting fragment of the candidate sentence; and splicing the current text fragment according to the averagesentence length, the first semantic score and the second semantic score, so as to obtain a target sentence corresponding to the current text fragment. During sentence segmentation, sentence lengths are considered, so that the sentence lengths are proper, long difficult sentences or massive short sentences are avoided, and the sentence lengths are relatively stable; and scoring of the semantic model is also considered, so that the sentence segmentation correctness can be improved, semantic meanings of the sentences are not damaged and the intelligibility of the sentences is improved.