Wagner's greatest artistic achievement is in opera reform and creation. On the one hand, he resented the superficial content and style of Italian and French operas on the German opera stage at that time, and on the other hand, he saw many weaknesses of German national operas, so he made bold reforms in opera art. Based on the principle that opera should integrate drama, art and music, he created a new type of opera, which he called "musical". In these traditional Chinese opera works, music, drama and other art forms are closely combined to create the overall artistic beauty. In addition, in the creation of opera music, he strengthened the expressive force of the orchestra and created a new technique of "instigation", which made the music image more concrete and vivid. Wagner founded a new art form-musical.