Abstract: In order to improve mechanization level of peanut planting in Daxing District of Beijing City, Daxing District Agricultural Mechanization Technology Extension Station of Beijing City conducted a lot of investigation and research on peanut harvesters． Supporting power, loss rate, reliability, utilization rate and other important indicators were analyzed． Finally, SH4HZ-2 peanut combine harvester produced by Shandong Changlin Agricultural Equipment Co., Ltd． and 4HS-2 high-efficiency peanut harvester produced by Hebei Yongfa Hongtian Agricultural Machinery Manufacturing Co., Ltd． were selected as experimental research objects． Through field performance test, loss rate, fruit picking rate, damage rate, impurity content rate and working efficiency of two peanut harvesters were compared and analyzed． It was proved that performance of SH4HZ-2 peanut combine harvester was better than that of 4HS-2 efficient peanut harvester, which provided a good test basis for large-scale popularization and application of SH4HZ-2 peanut combine harvester in Daxing District of Beijing City．