Abstract: 【Objective】 A flexible harvesting and low-destructive header harvesting platform for fresh-food corn is to be designed. This finding can provide reference for mechanical harvesting loss reduction of fresh corn. 【Methods】 A two-stage transitional knife rolls was designed. Kinematic analysis of picking process was carried out to get the size and working parameters range of knife rolls and puller belt. Through theoretical analysis,the range of center distance of cutting knife rolls. Through discrete element simulation based on Hertz-Mindlin with bonding contact model,the suitable value of center distance of knife rolls. The knife rolls was assembled with staggered knife. It effectively alleviated the problem of high impurity content caused by excessive broken stalks. Through fatigue resistance test on two different kinds of rubber poking belts,and it was concluded. 【Results】 Designed a flexible harvesting and low-destructive header harvesting platform for fresh food corn.The main failure modes of rubber poking belts were wear of inner ring drive teeth,fracture of poking belt body and fatigue opening of outer ring poking teeth,and better wear and fatigue resistance of nitrile rubber poking belts with zinc oxide. A low-loss heading device was designed to effectively prevent damage caused by impact of causal spikes on stirrer blades,and the grain breakage rate was reduced by 0.08%. Through field orthogonal test and optimization,it was concluded that the forward speed of the machine was 7.2 km/h,the center distance of the knife rolls was 103 mm and the speed of the knife rolls was 700 r/min. 【Conclusion】 The average grain breakage rate and the average impurity content are 0.368% and 0.43%,respectively after optimization,which are better than the industry standard.