The invention provides a cooperative diversity transmission method of a radio base station and cellular communication base stations. The cooperative diversity transmission method comprises steps that the radio base station broadcasts and transmits original signals [X1 X2 X3 X4...]; and at the same time, a first cellular communication base station, in cooperation with the radio base station, transmits signals [-X2*X1* -X4*X3*...] to a subscriber, wherein X1, X2, X3 and X4 are data vectors with the identical length, and the symbol * represents the complex conjugation of signals; a second cooperative transmission cellular communication base station, in cooperation with the radio base station, transmits signals [X3 X4 X1 X2...] to the subscriber; and a third cooperative transmission cellular communication base station, in cooperation with the radio base station, transmits signals [-X4*X3* -X2*X1*...] to the subscriber. According to the cooperative diversity transmission method, no change on the radio transmission signals is needed, that is, on the condition of not influencing original radio reception, signals orthogonal to radio signals are transmitted by the cellular communication base stations, and thus cooperative diversity transmission is formed, and the network capacity and the coverage effect of the radio transmission in a hybrid network of radio and cellular communication are improved.