Based on the test data, the engineering measures to enhance the flow erosion capability in the north passage of the Yangtze estuary are discussed. The results shows that: 1) It is not feasible for attempting to adjust the topography in the middle region of the north passage to make natural thalweg location coincident with the current navigation channel axis by dike construction project only; 2)To achieve a more obvious erosion effect, the new dike should be arranged in the deep water near the mainstream, in addition, groyne encryption also plays a significant role in the north side of the north passage, middle region; 3) To further enhance the flow erosion capability in the north passage, the comprehensive measures of adjusting new groyne and navigation axis should be taken. It is difficult to better enhance the flow erosion capability in the north passage by extending groyne only.