To solve the problem of mouth bars at the entrance of Chaohu waterway，this paper studies the design scheme of silt geotextile tube embankment with a field test，calculation check and benefit analysis under the on-site engineering construction conditions of the entrance. The field filling test results indicate that the 2.8 m ×1.6 m×0.6 m flat geotube scheme is better in dehydration efficiency and stacking stability. The calculation results show that the overall stability of the jetty design scheme has sufficient safety reserves. The maximum settlement（about 88 mm）occurs at the embankment core，and the settlement difference between the core and the toe of the embankment is about 15 mm. In addition，the design scheme meets the requirements of anti-slip stability between geotextile tubes under the design wave load. The benefit analysis manifests that the silt geotextile tube embankment scheme can save more than 20% of the cost，and it has great environmental and social benefits.