Abstract: 【OBJECTIVE】Study the carbohydrate metabolism of postharvest fresh waxy corn and the effect of different temperature changes to it. 【METHOD】The content changes of sucrose,reducing sugar,amylose and amylopectin were determined. 【RESULTS】The content of sucrose,reducing sugar continued to decline. The content of toatal starch,amylose and amylopectin all reached the peak value at 1st day,followed by little change in amylose, amylopectin content decreased slightly,with toatal starch showed an increase trend. Compared with 20℃storage temperature,the content of sucrose, reducing sugar and amylopectin was high,while the content of amylopectin and toatal starch was low when stored at 0℃storage temperature. 【CONCLUSION】The anabolism about inverting of soluble sugar to starch occupied the dominant position for postharvest fresh waxy corn. The inverting of soluble sugar to starch and amylose to amylopectin can be reduced when stored at 0℃.