We report a kind of cosmic ray telescope of plastic scintillator which is utilized to study the new-type timing detector

Multi-gap Resistive Plate Chamber (MRPC). The telescope is composed of long plastic scintillators and wave-length-shift-fibers (WLSF). The fluorescence photon transport in the scintillator

the time resolution and acceptance of the telescope and the MRPC detector’s efficiency are studied by both experiment and simulation. The results show that the photon transport velocity is uniform and equal to about 150ps/cm in scintillators

the reference time resolution of the telescope system is 70~90 ps with a 788 ps start time(T0)

which is gotten by a long scintillator embedded with WLSF. The MRPC detector efficiency is above 90% after simulation calibration and uniform at each cell in whole MRPC module.