In this study, fruitlets of kiwifruit after flowering 2 weeks were applied with different kinds of plant growth regulators including CPPU (12.5 mg/L), 6–BA, NAA and GA3 with various concentrations (50, 100, 200 mg/L), and water treated was taken as control. Fruit weight, shape index，nutritional components and mineral elements in ripe kiwifruit were adopted as indices to analyze the effects of various plant growth regulators on them. The results indicated that these growth regulators could generally enlarge the size and weight of kiwifruits. The weights were increased significantly over the control except for treatments with 6–BA. Water content was not significant increased in all treatments. CPPU could not alter the fruit shape index, but could significantly increase the contents of soluble solids, protein, contents of Ca, P and Mg and decrease the contents of titratable acid, vitamin C and B. Fruits treated with 6–BA had higher shape index, soluble sugar content and lower titratable acid content. The contents of protein and vitamin C in fruits were positively increased with 6–BA concentrations, which were significantly larger than those of in control. 6–BA also improved the contents of Ca and Mg, but reduced K. Compared with the control, the treatments with NAA at the concentration of 100–200 mg/L resulted in a higher fruit shape index. Positively relationships were found between the concentration of NAA and the contents of soluble solid and soluble sugar, which were significantly higher than the control, while negative relationships were found between the concentrations of NAA and vitamin C contents. The fruits treated with NAA also contained more Ca and Mg, and less K. GA3 was found to be useful in raising the contents of protein, vitamin C, Ca and P, promoting Mg accumulation, and reducing the contents of titratable acid and K. However, the effects of GA3 on soluble solid and soluble sugar were negligible.