Using the recovery (standard addition) method, analysis for comparison was done of the silver nitrate titration method, the ultraviolet spectrophotometry method and the automatic potentiometric titration method, used in determining chloride contents in sweet potato seedlings of six different cultivars, and chloride absorption and distribution in shoots and roots of these sweet potatoes explored. Results show that the silver nitrate titration method was low in reproducibility and it was also hard to determine when to end the titration; the ultraviolet spectrophotometry was low in chloride recovery, ranging from 52.9% to 81.4%, and analysis of samples was influenced by the color of sample extraction solvent; whilst the automatic potentiometric titration method was high in chloride recovery rate, reaching high in the range from 93.9% to 105.5% with relative standard deviation being 0.6%~6.0%, and moreover, the method was simple to use, good in reproducibility and high in accuracy. Therefore, the automatic potentiometric titration method is the best one in determination of chloride in sweet potato. Chloride accumulation and distribution were determined of these sweet potato samples, using the automatic potentiometric titration method. Results show that chloride contents ranged from 0.067 to 0.096 mmol g^-1DW in shoot and 0.038 to 0.087 mmol g^-1DW in root. Significant differences were found between different cultivars in chloride contents in shoot and in root. The selectivity ratios of Cl^-1 translocation from root to shoot of the sweet potatoes were all above 1.0 regardless of cultivars, indicating that chloride tends to accumulate in shoot. The cultivar of leafy vegetable sweet potato (Fushu No.7-6) was the highest in selectivity ratio, and followed by Xuzi No.20-1 and Zhezi No.1, and the cultivar of starchy sweet potato (Quanshu No.9) the lowest.