Abstract: The paper quantitatively analyzes the activities of the contemporaneous reverse faults and the associated folds in Triassic Karamay formation of Huwan district in the northwestern margin of Junggar basin by comprehensively using growth index and fault throw, and discusses the correlation between the activity intensities of the contemporaneous reverse fault and the associated fold. The research shows that the activity intensity of Karamay fault which is a primary-order contemporaneous reverse fault is much higher than those of other small-scale contemporaneous reverse faults. The analysis of strata denudation restoration indicates that the activity intensity of the associated folds gradually increased during the deposition of Karamay formation. It is further found that the parameters of the associated folds well correlate with those of the activity of contemporaneous reverse faults. The length, width, rising amplitude and activity intensity of the associated fold are linearly positively correlated to those parameters of the faults, the structural area of the associated fold exhibits an exponential relationship with the activity parameters of the fault, and the rising amplitude of the associated fold well correlates to the growth index and fault throw of the fault