The TOF (Time-of-fight) trigger system of BES-Ⅲ (Beijing Spectrometer Ⅲ) is faced with the demand of transferring massive high speed data:receiving 368 fast hit signal from the Front-End-Electronics synchronous with the 41.7 MHz clock

sending the processed 4 bits hit number information and 3 bits back-to-back information to the Global-Trigger-Logic with real time

sending processed 136 bits position information to the Track-Match-Logic with real time

and it is desired to provide all the data packet to the DAQ system every 16 valid events

for off-line analysis. During the design

we employed different technical means

such as serialize/de-serialization

fiber

LVDS

VME bus

to achieve the different data transferring requirement. This paper describes the methods we applied in the design.