The physical characters of cardboard carton of different specifications sampled from farmers' organizations were investigated by pressure, breaking, and water spray tests in 1994-1997. The results from pressure tests indicated that the cardboard cartons held the pressure within the range of 335-734 kg at empty conditions; it was higher than the conventional cartons weighing 18 kg and holding presures of 350-450 kg. Breaking test revealed that the breaking strength was 13.5-23.5 kgf/cm^2, it was also higher than the breaking allowance of 12-13 kgf/cm^2. Water spray test showed that the R values were ranged from R2 to R8 which revealed the quality of cartons was not stable. Since the carton below R2 is easy to get wetting during the rainy day, therefore, in consideration of weather conditions, the water spray specification should set up at least at R4. But for the cold storage, it is better set at R8.