Abstract: In order to solve the problems that Pinus wangii seedlings have poor growth, poorly developed roots, and very higher mortality rate, seedlings planted in nutritional bags were used to study the effects of salicylic acid (SA) on its high quality seedling forming and physiological indexes. In our study, six different concentrations of SA solutions (0, 0.25, 0.5, 1.0, 1.5, 2.0 g/L) were sprayed on P. wangii seedlings to screen the best concentration of SA solution in favor of P. wangii. The results showed that SA solution could significantly improve the growth of P. wangii seedlings through increasing the root volume and stimulating the root activities, and enhancing stress resistance. Therefore, SA solution could facilitate the formation of high quality P. wangii seedlings. Furthermore, seedlings demonstrated the highest quality and the strongest stress resistance when SA concentration is 1 g/L, which was 295.18% higher than that of the control. In conclusion, it is suggested that P. wangii seedlings should be treated with SA at the optimum concentration of 1 g/L,.n order to solve the problems that Pinus wangii seedlings have poor growth, poorly developed roots, and very higher mortality rate, seedlings planted in nutritional bags were used to study the effects of salicylic acid (SA) on its high quality seedling forming and physiological indexes. In our study, six different concentrations of SA solutions (0, 0.25, 0.5, 1.0, 1.5, 2.0 g/L) were sprayed on P. wangii seedlings to screen the best concentration of SA solution in favor of P. wangii. The results showed that SA solution could significantly improve the growth of P. wangii seedlings through increasing the root volume and stimulating the root activities, and enhancing stress resistance. Therefore, SA solution could facilitate the formation of high quality P. wangii seedlings. Furthermore, seedlings demonstrated the highest quality and the strongest stress resistance when SA concentration is 1 g/L, which was 295.18% higher than that of the control. In conclusion, it is suggested that P. wangii seedlings should be treated with SA at the optimum concentration of 1 g/L,.