Data processing method, device and system and medium

The invention discloses a data processing method, device and system and a medium, and belongs to the field of communication. The data compression method comprises the steps that a reference three-dimensional model is acquired, the similarity between the reference three-dimensional model and a to-be-compressed three-dimensional model meets a specified condition, and the reference three-dimensional model and the to-be-compressed three-dimensional model are models of the same object in different frames of a three-dimensional animation; compression data of the to-be-compressed three-dimensional model are obtained based on the reference three-dimensional model, the compression data comprise a frame number and residual data corresponding to the reference three-dimensional model, and the residual data are used for indicating the difference between the reference three-dimensional model and the to-be-compressed three-dimensional model. The compression rate of the compressed data can be improved. 本申请公开了一种处理数据的方法、装置、系统及