In order to further explore the Actinidia fruit development and fruit commercial value, the fruit of a wild A. eriantha (found and cultivated in Sichuan, China) was used as the material to measure the dynamic changes of Physicochemical properties by combining field sampling and laboratory measurement.The results showed that flesh weight, vertical and horizontal diameter, as well as dry matter (DM) accumulation showed a sigmoidal increase trend during the fruit development. The period of starch accumulation was short, fructose and glucose concentration rose sharply after 105 DAA, and a small amount of sucrose and maltose were formed in the fruit physiology mature stages. The concentration of malic acid and citric acid showed an overall upward trend, while quinic acid remained relatively constant before 90 DAA, and rapidly decreased to the minimum at 105 DAA, and then remained relatively stable after words. The VC concentration was high and showed a decreasing trend. The A. eriantha fruit had excellent horticultural characters, and its fruit has a high content of organic acid, especially VC, which was a natural vitamin pool.
