  ARGO-YBJ ia a detector optimized to study small size air showers. It consists
of a layer of Resistive Plate counters (RPCs) covering an area of about 6500
m^2 and will be located in the Yangbajing Laboratory (Tibet, China) at 4300 m
above the sea level. ARGO-YBJ will be devoted to a wide range of fundamental
issues in cosmic rays and astroparticle physics, including in particular
gamma-ray astronomy and gamma-ray bursts physics in the range 10 GeV-500 TeV.
The sensitivity of ARGO-YBJ to detect high energy GRBs is presented.
