近幾年來，台灣二胡藝術的發展在演奏水平不斷提升，然而在創作樂曲上依然較為欠缺，仍以依賴演奏大陸作品為主。
可喜的是在 2003 年文建會所舉辦的民族音樂創作獎「二胡協奏曲組」得獎的前三名都是台灣的作曲家，其中陸橒的《西秦王爺》更脫穎而出得到首獎的殊榮，引起樂界的注目，而此曲運用新穎的創作手法，巧妙地融合戲曲素材，正是其特殊且具有藝術價值的地方。
本文首先對《西秦王爺》的創作動機、背景及曲意內容進行探討，其次對樂曲的架構、曲式做進一步的分析，最後再透過這些分析結果提供筆者的詮釋觀點及樂曲看法。期望能藉由這樣的分析探討，帶給作曲、演奏與欣賞三方面不同的參考價值，並對這首樂曲有更深入的認識。

In Taiwan, the skill of Erhu Performing has been increasingly improved in recent years, but the most of Erhu pieces are still composed by the China's composers. Even though, the top three winners of 2003 Traditional Music Composition Contest, which was directed by Council for Cultural Affairs, were all Taiwan's composers. The winner of the first prize was ‘‘The King of Western Qin Concerto for Erhu’’ composed by Yun Lu. In this piece, she used traditional Chinese music, Qin Qiang(秦腔), as a musical material, and combined with a novel technique. It represented a unique style. That was the reason why this piece had caught lots of people's attention.
In this thesis, the compositional background and the musical motive of The King of Western Qin Concerto for Erhu’’ would be first discussed.Then analyzed the musical structure of this piece. In the end, through all the analysis, the interpretational viewpoint of this piece would come out. This thesis provided different prospects from three aspects: composition, performance, and appreciation. The detailed analysis will give a thorough understanding of this piece.