Aiming at the problem of high coding complexity due to the introduction of multi-type tree (MTT) partition structure based on quadtree (QT) partition in versatile video coding (VVC),a fast coding unit (CU) partition algorithm based on the difference of texture features of CU sub-blocks is proposed in this paper.This algorithm can effectively reduce the coding complexity of VVC and shorten the coding time.Firstly,through the text complexity difference of sub-blocks in different partition directions, the direction of MTT partition is judged in advance,and unnecessary MTT partition directions are skipped;Then, according to the texture difference between adjacent sub-blocks of current CU,it is further determined whether to skip the ternary tree (TT) partition,so as to further reduce the number of partition modes in the candidate list.The experimental results show that under the coding configuration of all intra (AI),compared with the official test platform VTM-7.0, the proposed algorithm can save 47.24% of the coding time on average, and the Bjntegaard delta bit rate (BDBR) only increases by 1.26%.