Disclosed is a broad sense diversity code shaping method suitable in the multi-antenna noncorrelation channel and a transmitting device, wherein the coding matrix with the corresponding range is searched according to the length of the transmitting symbol sequence to be coded, the number of the transmitting antenna and the time space/time frequency symbol speed required by the communication system. The coding matrix is composed of 0 and 1, then the optimum coding matrix which meets with the constraint condition is searched according to a plurality of coding matrixes searched, finally the transmitting symbol to be coded is converted into the broad sense diversity code in the noncorrelation channel according to the optimum coding matrix. Therefore, the broad sense diversity code in the noncorrelation channel effectively improves the performance of the communication system, and has wider application range, e.g. applied in the variable sequence length and the multi-antenna communication system of the variable diversity speed.