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On the basis of seismic data interpretation of Silurian in Bachu- -Maigaiti area of Tarim Basin��we did the research on the faults by using growth index method��got the sand body distribution by using well constrain- ed inversion��and finally studied the controlling effect of the faults on sand body�� In this area��the faults are main- ly shovel- like contemporaneous reverse in type�� They contain some typical thrust tectonic styles such as the snake- head anticline and the rushed up structure�� Many faults appear arc in the plane��with nearly NW as the main trend�� By the NE extruding��the studied area has formed two sets of opposite dip parallel thrust faults�� The com- bined fault type is“syncline type thrust system”in type�� In this area��the controlling effect of contemporaneous faults on sand body displays two different type that when the contemporaneous reverse fault and the provenance di- rection are nearly orthogonal��the controlling effect of contemporaneous faults for sand body is characterized by “curb effect” ; while they are crossing obliquely��it is characterized by“leading effect” ��