Gridding horizon tracking method

The invention discloses a griding horizon tracking method. The method comprises the steps of: 1, serving a well-passing point manual interpretation horizon interpretation line as a horizon interpretation quality control line and a seed line; 2, setting a rectangular three-dimensional earthquake body range and a line grid width along the line or along the direction of the line; 3, performing mesh generation on the rectangular three-dimensional body in the step 2, and performing automatic horizon tracking on each mesh unit; 4, judging and modifying the horizon tracking result in the step 3, andif the tracking result is satisfactory, continuing to track forwards; if the tracking result is not satisfactory, modifying the gridding tracking result, reversely performing gridding correction tracking and continuing forward tracking; 5, sequentially executing the step 2, the step 3 and the step 4 in the tracking direction to obtain a next gridding horizon tracking result; and 6, traversing thework area by using the ste