The invention relates to a method for judging the main provenance direction of a progradation body by using a progradation angle rose diagram. The method includes following steps that: 1) with the boundaries of the progradation body identified, seismic data are utilized to determine the center point of the progradation body, and follow-up profile observation and angle measurement are carried out with the center point of the progradation body adopted as a rotation original point; 2) layer flattening processing is performed on a seismic reflection layer; 3) the due north reference profile of the progradation body is determined, the progradation angle of the true north reference profile is measured; 4) n profiles parallel to the due north reference profile are selected, so that a progradation angle in due north can be calculated; 5) the reference profile is rotated, so that progradation angles in other directions can be obtained; 6) the measured progradation angles are utilized to make the progradation angle rose diagram; and 7) the main provenance direction of the progradation body is judged according to the progradation angle rose diagram. With the method of the invention adopted, the main provenance direction of the progradation body can be explained directly and effectively. The method has guiding significance for the division of stages of complex bodies of sedimentary bodies of a tectonic region and research of reservoir characteristics and sedimentary phases, and has high operability.