With the rapid development of wireless communication technology

spectrum efficiency and system capacity has been close to the Shannon limit.As a new technology

the orbital angular momentum(OAM) has attractive properties of high spectrum utilization and anti-interference

arousing widespread concerns of domestic and foreign academics.Firstly

this paper reviews the application of OAM and the basic principle of wireless communication system.Then

it puts emphasis on the research progress of OAM in the related fields

mainly on the in-depth analysis for key technologies of generating OAM and the summary in existing method for receiving OAM.Finally

it looks into the future and proposes some prominent issues to be solved and focused on wireless communication research and application of OAM

including generation and reception of electromagnetic vortex waves carrying OAM

the suppression of the mutual interference of the OAM electromagnetic vortex waves in different modes

coding of OAM and the separation and detection of vortex waves carrying OAM in different modes and so on.