The invention relates to a method and system for generating binary syntax elements of a video image frame. The method comprises the following steps: acquiring the syntax elements to be encoded of the video image frame, and grouping the syntax elements; performing binarization processing on each group of syntax elements by adopting a parallel mode, and obtaining binary bitstreams of a plurality of syntax elements; and after cache scheduling, generating the binary syntax elements of the video image frame that conform to a binary arithmetic coding sequence. In the method for generating the binary syntax elements of the video image frame provided by the invention, the independence between different types of syntax elements is fully utilized, and various syntax elements are grouped to realize parallel processing, thereby overcoming the inefficiency of the traditional serial mode processing; and besides, through caching, the problem that bits which are not fixed in length are generated due to the binaryzation of the syntax elements can be overcome, the stable output of multi-bits binary syntax elements can be realized, the processing speed of the binaryzation of the syntax elements is improved, and stable and efficient input is provided for the subsequent efficient binary arithmetic coding, thereby improving the overall coding efficiency of CABAC (Context Adaptive Binary Arithmetic Coding).