Abstract:The paper briefly reviewed the development history of 3-D seismic acquisition geometry in Jiyang depression, and carried out the study on the optimum design method of geologic target-oriented seismic acquisition by starting from the seismic and geologic conditions of Jiyang depression, which obtained following knowledge:①the single-shot forward simulation of thin-layer model showed the phenomenon of thin-layer interference will be taken place along with increasing the offset, leading to decrease the dominant frequency of seismic wavelet. So, it should fully use mid and near offsets data to study thin layer and carry out offset-divided processing; ②it is known by 2-D and 3-D forward simulation of geologic models such as gentle slope zone, depression zone, central faulted anticline structural zone, buried hill drape structure and steep slope zone that the effective receiving range of reflections from underground complex interface is concentrated into the right upper position of reflections no matter where the shooting points are. It is convenient to use short shot interval and receiving line interval as well as adequate length and width of spread patch for complex structure; ③the key technique of optimum design method of geologic target-oriented seismic acquisition is to build up 3-D seismic and geologic model consistent with practice, carry out forward simulation faced with objective horizon and analyze the distribution of CRP folds in different surveying scheme in order to optimize the geometry.The case of 3-D optimum seismic acquisition design in CG oilfield showed the method in the paper has referential meaning for optimum seismic acquisition design in continental faulted basin having complex structure.