The present disclosure provides an allocation method and apparatus for Code Block Groups in a Transport Block. The Method comprises the following steps: sending a Transport Block through a first device to a second device, wherein, the Transport Block comprises at least one Code Block Group which is obtained by the first device allocating the Code Blocks in the Transport Block according to a preset allocation strategy; and sending the preset allocation strategy through the first device to the second device. The technical scheme provided by the present disclosure has an advantage of high efficiency.