Abstract: ObjectiveEffects of phosphorus(P)and aluminum(Al)on seedling growth,P accumulation,Al accumu-lation,available P content and available Al content of Camellia vietnamensis Huang.seedlings were investigated to pro-vide reference for exploration on the adaptation of C.oleifera in the environment with high Al and low P in southern Chi-na.MethodC.vietnamensis seedlings were planted in latosol.Random block experiment was conducted adding 0,0.5, 1.0 mmol/kg P(P0,P1and P2)and 0,10,20 mmol/kg Al(Al0,Al1and Al2)in latosol.Growth indexes,P and Al contents, soil exchangable Al and soil available P and AI content in different treatments were determined and analyzed.ResultAdding Al into latosol restrained C.vietnamensis seedling growth;adding P could alleviate the inhibitory effects of Al, and seedling growth in Al0P2treatment was the best.Adding P and Al had significant effects on ground diameter,seedling height,fresh weight,root/shoot ratio and relative content of chlorophyll(SPAD)of C.vietnamensis(P<0.05,the same be-low),but the effects of P and Al on C.vietnamensis seedling growth were relatively independent.Adding P could effective-ly reduce Al content in root of C.vietnamensis seedlings,and root Al content in Al0P2treatment was 35.22% lower than that in Al0P0treatment.The effects of P,Al and their interaction on P and Al contents on C.vietnamensis seedlings were signifi-cant.Adding Al could increase soil exchangeable Al content,and adding P could reduce soil exchangeable Al content,ad-ding 1.0 mmol/kg P was the most effective in reducing soil exchangeable Al content. P,Al and their interaction had ex-tremely significant influence on exchangeable Al and available P content in rhizosphere soil of C.vietnamensis(P<0.01). The results of correlation analysis showed that soil available P and exchangeable Al content were significantly positively correlated with the growth of C.vietnamensis and contents of P and Al.ConclusionAdding Al into latosol where grows C.vietnamensis can increase soil active Al content and decrease available P content,which inhibits the growth of seed-lings.Adding P can reduce soil active Al content,which effectively alleviates the harmful effects of Al stress on root of C. vietnamensis seedlings,promotes chlorophyll synthesis,biomass accumulation and P uptake of the seedlings.So adding P is beneficial for the growth of C.vietnamensis seedlings.