In today’s information explosion, simple text and pictures have long lost the market, replaced by the multidimensional expression form which integrates text, pictures, sound and other elements and mobilizes people’s vision, hearing, smell and other senses. Therefore, in the context of digital technology, this paper deeply explores the innovative propagation modes of short video works by establishing the CONVLSTM propagation model. The results show that the innovation of the similarity symbol system in the content of short video works is 65%. The innovation of symbol interpretation in the content of short video works is 73%. Then, with respect to the form strategy of short video works, the innovations of short video works on Weibo, Douyin, Kuaishou and Wechat platforms are 54%, 93%, 24% and 45% respectively. Therefore, it is concluded that the unique expression of Douyin short video works is the most innovative point, which differentiate from the traditional TV-style short video works on Wechat and Weibo platforms.