The effect of the boron(potassium tetraborate) treatment on quality,sucrose metabolism and anthocyanin synthesis in harvested Chinese bayberries 'Wumei' storaged at 1°C was investigate.The results exhibited that the 1 %(w/v) was the maximum concentration of boron and it remarkably lowered the decay incidence and maintained fruit quality in Chinese bayberries during the storage.Furthermore,it could significantly inhibit the activities of AI,SPS and SS2(SS synthetic direction) and increase the SS1(SS cleavage direction) activity.Meanwhile,the boron-treated bayberries showed the lower contents of glucose and sucrose as well as higher contents of fructose,total anthocyanin and cyanidin-3-glucoside compared to the controls.Thus,it is suggested that the boron element regulates the enzymes activities for sucrose metabolism by accumulating anthocyanin precursor UDPG,and provided the substrate for anthocyanin synthesis to promote anthocyanin synthesis and improve the storage quality of Chinese bayberries.