The invention discloses a high reliability space division multiplexing laser communication antenna under a dynamic rotation condition and belongs to the field of wireless laser communication. In orderto solve the problem in the prior art, a data source is connected with a first communication laser and a second communication laser; an outer optical transmitting antenna, an inner optical transmitting antenna, an inner optical receiving antenna and an outer optical receiving antenna are coaxially set in sequence; the first communication laser is connected with the outer optical transmitting antenna through an optical fiber; an optical fiber end face is located on a focal plane of the outer optical transmitting antenna; the second communication laser is connected with the inner optical transmitting antenna through the optical fiber; the optical fiber end face is located on the focal plane of the inner optical transmitting antenna; a first high speed photoelectric detector is connected with the inner optical receiving antenna through a multi-core optical fiber; the optical fiber end face is located on the focal plane of the inner optical receiving antenna; a second high speed photoelectric detector is connected with the outer optical receiving antenna through the multi-core optical fiber; the optical fiber end face is located on the focal plane of the outer optical receiving antenna; and a data memory is connected with the first high speed photoelectric detector and the second high speed photoelectric detector.