Numerical study is carried out of tropical high frequency temperature anomaly in the context of the IAP model developed by the Institute of Atmospheric Physics,Beijing.Comparison of the findings to those from a control experiment shows that the intraseasonal and biweekly oscillations are properties inherent in the atmosphere;high-frequency anomaly in tropical temperature will give rise to change in physical quantity fields,particularly in the context of intraseasonal oscillation,with primary alterations in weakening the original intraseasonal and intensifying the high-frequency portion of the oscillation at extratropics;the response is displayed tropically by the travel at great pace to the east,predominantly,and west,to less degree,in the mid and upper level atmosphere so that a teleconnection pattern is generated at low latitudes between the disturbance source and a place 20000 km away.It is noted that the perturbation resembles a type of mixed Rossby-gravity waves as regards velocity. The response takes the form of east-to-west propagation in high latitudes and dominantly eastward shift over mid-low latitudes,with meridional,chiefly equatorward,migration in some particular areas.