Abstract: The data acquisition system based on gamma-ray total absorption facility was developed for the accurate measurement of neutron capture cross section in the energy range of keV-MeV. The pulsed signals from the detectors were acquired by FlashADC for data acquisition system on a Linux operation system. The control of program, store of data, online monitoring and analysis code were based on the Root framework. The main performances of system were acquired by the measurement of ⁶⁰Co and ¹³⁷Cs. The data acquisition system meets the requirement of accurate measurement of neutron capture cross section by GTAF.