Abstract: A self-propelled caragana fodder combined harvester was designed.It could complete joint operation such as Caragana stubble cutting，conveying，cut off and packing.This machine adopted high degree automation hydraulic walking system and intelligent control technology based on DSP in full load feeding and walking speed matching.Its working principle was introduced.Main working parts structure was designed.Field test proved that the whole machine performance index met requirements of task，and it complied with relevant national standards and local standards.