When the foreign steamers surpassed the multiple rapids and entered the upper Yangtze River, what would happen between the steamers and the local junks? What kinds of impulses and challenges would the steamers, featured by the high speed, great bearing capacity and high stability, bring to the junkmen? How would the boycott and resistance of the junkmen in misery jeopardize the steamers' navigation? What would the following foreign gunboats' interference and revenge influence the Sino-foreign relationship? This article tries to deal with the Wanhsien Incident, 1924, and elucidate the possible causes of the anti-British trend in China in 1920s by comparing the different standpoints of Britain and China, reconstructing the processes of the incident, and analyzing the reasons, responsibilities and significance of the incident.