1999 Sunny Days is an episode beyond ordinary movies. This song describes the beautiful scenery of 1999 in late winter and early spring, and becomes a symbol of simple, sincere and lingering love. Moreover, the song structure is simple and catchy, and the film screening process seems to have played a role in teaching singing. The audience can almost recite it after watching the movie. ? This well-known and widely spread movie song, its lyrics use a lot of folk materials and expressions such as lines, questions and answers, repetition in folk songs, which makes the whole song full of fresh vitality and has a solid life foundation. The tune of the song is a traditional five-tone and six-tone, and the tune is mainly progressive, with a small jump, which is beautiful, fast-paced, soft and melodious, and euphemistic, with a small range span. It adopts the typical expression of Jiangsu folk songs in minor style, just like humming a ditty at work and leisure, and like a duet of young lovers, which is very vital and lively. The melody of the song is beautiful, the melody is lively and euphemistic, the lyrics are sincere and simple, full of strong local flavor and folk song flavor, which makes people never tire of listening to it. This song is deeply loved by the audience, and it is a classic music work that has been sung for half a century and still maintains its vitality.