A method and a system for controlling a compressed mode in a macro-diversity state are provided by the disclosure, wherein the method comprises that a terminal and a serving node B determine a compressed mode, wherein the compressed mode comprises: transmission gap pattern sequence information; the terminal and the serving node B start or stop the compressed mode, the terminal or the serving node B indicates a current compressed mode state to a related node B, and the related node B performs compressed mode operation according to the current compressed mode state. According to the disclosure, the problem that the execution state of the compressed mode of the terminal and a network side cannot be synchronized is solved, normal operation of the compressed mode of the terminal is guaranteed, and the service quality of the terminal and the performance of the system are improved.