The invention discloses a time division-synchronous code division multiple access (TD-SCDMA) synchronous transmission and recovery device. A data processor is in circuit connection with a multiple access memory and a backup register respectively. The circuit of the multiple access memory and the backup register is connected with a decoder. The data processor processes signals from different networks to form synchronous signals which are stored in the multiple access memory and registered in the backup register respectively. After being decoded according to a data running command by the decoder, data stored in the multiple access memory is continuously transmitted or processed. When the data in the multiple access memory is lost or unstable, raw data stored in the backup register may automatically perform supplementation to ensure the stable and fidelity output of synchronous data. The device can solve the technical problems of synchronous transmission and recovery of a plurality of paths of data signals, and is applicable to the synchronous transmission of the signals in the field of communication.