A method and apparatus, and a storage medium for data transmission are provided. The method may be applied to a terminal. The terminal may receive a Media Access Control (MAC) signaling sent from a base station. The terminal may receive Downlink Control Information (DCI) sent from a base station. The terminal may search in a preset mapping corresponding to n antenna panels for beam indication information corresponding to a beam indication code word as target beam indication information respectively corresponding to the n antenna panels. The terminal may determine, according to the target beam indication information corresponding to a target antenna panel, a corresponding target beam when data transmission is performed by using the target antenna panel. The terminal may perform data transmission with the base station by using the target beam corresponding to the target antenna panel.