Beethoven was deaf. According to Beethoven's life, the golden creation period of music art is just after hearing loss, and Ode to Joy is the peak work after hearing loss. In the last ten years of Beethoven's life, he was completely deaf, his health deteriorated and his life was poor, and he was constantly tortured mentally. However, Beethoven still wrote the Ninth (Chorus) Symphony with giant perseverance, which summed up his glorious and epic life and showed the good wishes of mankind.