The invention provides a simple and practicable method for automatically controlling a tracking antenna The simple and practicable method comprises steps of 1, obtaining motion object positioning information: longitude alpha 1, latitude theta 1 and elevation h1, 2, obtaining positioning information of the tracking antenna: longitude alpha 2, latitude theta 2 and elevation h2, 3 directly calculating an azimuth beta and a pitch angle gamma of the tracking antenna which is pointed to a motion object without considering an earth curvature, and 4, outputting the azimuth beta and the pitch angle gamma to a control rotary table. The control rotary table drives the tracking antenna to run in place through an azimuth motor and a pitch motor to point to a motion object. The simple and practicable automatic control tracking antenna method is simple in calculation, low in complexity and easy to realize.