Abstract: In order to solve existing problms of garlic harvester，like high labor intensity，high cost of garlic harvest and low degree of current mechanization and automation of garlic harvest in our country，a full-automatic combine harvester of garlic was designed.Whole structure and working principle of each part of garlic full-automatic harvesting machine were described and key structures，profile locating cup and floating flexible spring cutter were further researched.This harvester could realize garlic excavation，gripping transport，variable row transmission，rhizome removal，automatic bag collection of garlic，and so on.The three-dimensional model was established by UGNX10.0 software，and working parameters of important parts of automatic garlic harvester were calculated by field experiment and statistical data analysis.The calculated harvesting efficiency was 0.04 hm2/h，which was 87.5% higher than that of manual harvesting.