Control method and system of transmit diversity

The present invention discloses a control method and system for transmit diversity, the method comprising: a radio network controller sends a control message to the receiving terminal, wherein the control message carries the F-PCICH information indicating whether to use the STTD; command message to select for the receiving end according to whether transmit diversity is activated. According to the present invention can solve the related art problem of how to control the F-PCICH in a case where the user equipment is configured with only the dedicated channel and transmit diversity are currently no corresponding predetermined.