An experimental study on the fluid flow and heat transfer characteristics was performed for a two-dimensional jet issuing parallel to a flat plate. A split film probe and thermochromic liquid crystal are used to measure the mean velocity and turbulent intensity, and plate wall temperature, respectively. The offset ratio ranges from 0 to 20, the Reynolds number from 6500 to 39 000 and the nozzle width is 20 mm. It is observed that a dividing streamline of the jet unstably reattaches in The impingement region. However, the time-averaged reattachment points are found to coincide with the maximum Nusselt number locations. The correlations between the local Nusselt number distributions and Reynolds number Re, offset ratio H/D, and streamwise length X/D are presented.