A kind of method and device of random access

The present invention provides a kind of method and device of random access, and the method for the random access includes: the cell synchronous signal for detecting base station and sending, and determines the arrival bearing of the cell synchronous signal；According to the arrival bearing of the cell synchronous signal, the target sending direction of accidental access signal is determined；The accidental access signal is sent up in the target sender；The confirmation signal that the base station is sent on the arrival bearing of the accidental access signal is received, the base station is accessed.The embodiment of the present invention in access procedure, obtains optimum beam figuration direction in base station and terminal, the data transmission of both sides later can apriority carried out with optimal beam, ensure that the performance of data link；And the method for random access access delay under high band is low, it is practical.