Abstract: Sweet sorghum is recognized as one of the most promising renewable energy crops，and harvesting technology is one of the key factors restricting development of sweet sorghum.In order to better solve mechanized harvest of sweet sorghum and realize mechanized operation of sweet sorghum，a self-propelled sweet sorghum harvester windrower was designed，and equipment was introduced.Overall structure scheme and design of main working parts were systematically expounded.Design ideas of main working components and some components were determined.Test was verified，which provided a reference for study of mechanized harvesting technology for sweet sorghum.