In order to provide a reference for the cultivation of ‘Liguangxing’ in Dunhuang area of Gansu Province, we used 8yearold ‘Liguangxing’ as the test material. During the flower bud expansion period, 0.1% (P1), 0.3% (P2) and 0.5% (P3) boron were sprayed. Besides, 50 (C1), 100 (C2) and 150 mg/L (C3) gibberellin were sprayed in the early blooming period. The fruit quality, fruit setting rate and nutritional growth index of ‘Liguangxing’ under different treatments were measured. The advantages and disadvantages of different treatments with principal components were analyzed. The results showed that: (1) the leaf area growth of ‘Liguangxing’ was significantly higher than that of CK under C1 concentration. Boron treatment with different concentration had inhibitory effect on leaf area growth. However, the fresh treetop growth rate of C1 and P2 was higher than that of other treatments. (2) Suitable concentration of boron and gibberellin can effectively reduce the abortion rate of ‘Liguangxing’ and improve the fruit setting rate of fruit trees. Boron treatment was the best at P3 concentration and gibberellin treatment was the best at C2 concentration. However, there was no significant difference in fruit setting rate between P3 and P2 treatments. (3) Boron and gibberellin could significantly improve the quality of plum and apricot fruit. The ratios of sugar to acid and soluble solids in C1 were significantly higher than that of CK. The contents of Vc and titratable acid in P2 treatment were significantly higher than that in others. The optimum concentration of gibberellin and boron can significantly promote the fruit weight, shape index and lateral diameter. (4) According to the comprehensive evaluation results of principal component analysis, the comprehensive scores of the treatment effects of each concentration were P2 (1.20), C2 (0.91), P1 (0.13), C1 (-1.01), CK (-1.68), P3 (-2.13) and C3 (-7.76) from high to low. The main components included soluble sugar, soluble protein and ratio of sugar to acid are higher, which could be used as an important basis for evaluating the quality of ‘Liguangxing’ fruit. It was found that spraying appropriate concentration of boron and gibberellin at flowering stage could effectively improve the growth status, fruit setting rate and fruit quality. In Dunhuang area of Gansu Province, spraying 0.3% boron at the stage of flower bud expansion and 100 mg/L gibberellin at the early stage of full bloom were the best.