The present invention provides a wireless beam reflection and alignment method and device for overcoming the shortcoming of the prior art that the optical path can only be established in the form of straight lines at a transmitting and receiving end. The method comprises the following steps: a first communication end transmits a first laser beam and/or a first optical path detecting beam to a first reflector. The first communication end adjusts the angle of incidence and/or the point of incidence of the first laser beam and/or the first optical path detecting beam on the reflection face of the first reflector in an open-loop or closed-loop manner so that the outgoing light of the first laser beam passing through and reflected by the first reflector enters the light receiving path of the second communication end. After the outgoing light of the first laser beam reflected by the first reflector enters the light receiving path of the second communication end, the first communication end performs optical path tracking using the optical path alignment state feedback information from the second communication end. The method and the device can realize the turning alignment of optical paths and extend the application of wireless optical communications.