Using "LanFeng"blueberry as the material,the effects of refrigeration on cell wall components and cell wall-degrading enzyme activities of blueberries were investigated. Results showed that the content of ISP and CSP,the activity of PG,Cx and β-Gal were closely related with softening of the fruit,wherein ISP content and PG activity were significantly negative correlated with the firmness of the fruit,the activity of Cx and β-Gal showed highly significant negative correlation with firmness,the content of CSP and firmness were highly significant positive correlation. During cold storage,the content of CSP decreased progressively,the change of ISP content was small,the activity of PG and β-Gal increased gradually and the activity of Cx rose firstly and then decreased. The activity of PG,β-Gal and Cx rose sharply in the later period of cold storage. In the first 30 days of cold storage,the change of cell wall components and cell wall-degrading enzyme activity were small and firmness decreased slowly. Compared with the blueberries stored at room temperature,the activity of Cx and β-Gal in the refrigerated fruit maintained at a low level,the peak of PG activity appeared later,the peak of Cx activity decreased significantly,and the peak of PE activity was not appeared during shelf life at room temperature after refrigerating for 30 days. Thus it can be seen that the cell wall components and cell wall-degrading enzyme activities were inhibited in a certain degree and the blueberries were kept in a good condition after cold storage for 30 days.