The invention provides a random access method, a random access device, a readable storage medium and a base station. The random access method comprises the steps of distributing random access configuration information to a terminal, wherein the random access configuration information at least comprises a lead code sub-set range, an association relationship exists between the lead code sub-set range and beams, and the lead code sub-set range is used for instructing lead codes to be selected to the terminal when beams are accessed; receiving the lead code from the terminal, and determining a target beam at least according to the lead code from the terminal and the association relationship between the lead code sub-set range and the beams; and instructing the terminal to access the target beam. According to the technical scheme provided by the invention, the random access can be performed in an NR system supporting multi-beam operation.