《天净沙·秋思》是马致远创作的一首宋元散曲，共四句，每句五字，共二十字。原曲为：
“枯藤老树昏鸦，小桥流水人家，古道西风瘦马。夕阳西下，断肠人在天涯。”
这首曲子描绘了一个凄凉萧瑟的秋天景象，表达了羁旅天涯的游子对家乡的思念和对人生的感伤。
这首曲子以“枯藤老树昏鸦”开篇，就营造了一个萧瑟、荒凉的氛围。接着，曲中出现了“小桥流水人家”、“古道西风瘦马”等意象， further enhances the sense of loneliness and melancholy. Finally, the song ends with the line "The setting sun in the west, broken-hearted people in the world", which expresses the poet's deep sadness and homesickness.
这首曲子在艺术上具有很高的成就。它语言简洁，形象生动，富有感染力。曲中运用了对比的手法，将萧瑟的秋天景色与诗人孤寂的心境形成鲜明对比， thereby enhancing the emotional impact of the poem. In addition, the use of repetition in the last line of the song "Sunset in the west, broken-hearted people in the world" also deepens the reader's impression and makes the song more memorable.