Abstract: In radioactive nuclear beam physical experiments with middle and low incident energies, the CsI(Tl) detectors are usually combined with the silicon detectors to make up of the Si-CsI(Tl) telescopes to identify charged particles using the \varDelta E \text- E method. The performance of CsI(Tl) detector and the particle identification property of Si-CsI(Tl) telescope depend on the light output amount, light-output uniformity, as well as data acquisition system (DAQ). In this paper, we try to change the covering materials and the photon-electron conversion devices of the CsI(Tl) detector to increase the light output, improve the detection long-term stability and the light output uniformity of the wedged CsI(Tl) detector. Moreover, we test and compare the properties of Cs(Tl) detectors using different DAQ systems, which show that the energy resolution and the counting effective are better if the digital DAQ with the best parameters set is used for the Cs(Tl) detector.