With Pistacia chinensis as materials,which were treated by foliar spray method,this paper studied that the effects of PP₃₃₃ and CCC treatment on leaf anatomical structure,pigment content,photosynthetic and physiological indices and chlorophyll fluorescence parameters.The results were as follows:the leaf thickness,palisade tissue thickness,sponge tissue thickness and pigment content firstly increased and then decreased with increasing concentrations of growth regulators,as the same as the net photosynthetic rate (P_n),ratio of variable to maximum fluorescence (F_v/F_m),potential photochemical efficiency (F_v/F₀),energy fluxes per excited cross-sections for absorption (ABS/CS),trapping (TR_o/CS) and electron transport (ET_o/CS).All of these indices reached the maximum when PP₃₃₃ concentration is 800 mg/L and CCC concentration is 500 mg/L,and the results indicated that the net photosynthetic rate(P_n) of P.chinensis was significantly increased with 800 mg/L of PP₃₃₃ and 500 mg/L of CCC.Study found that the increase of thickness ratio of palisade tissue and sponge tissue and content of chlorophyll improved the ability of light capture and absorption light energy of leaves,and the increase of openness degree and actinity of PSⅡ reaction centers ensured the efficient transfer of light energy and reduced the heat dissipation of energy.All of above is the response mechanism that growth regulators increase the net photosynthetic rate of nursery stock and ensure the efficient photosynthesis of nursery stock.