Abstract: Four treatments of different fertilizing amounts of a humic acid biochemical compound fertilizer (1 kg, 2 kg, 3 kg and 4 kg per plant respectively) were designed in this study, and the variations of chlorophyll fluorescence power curve, photoresponse curve, photochemical quenching ([WTBX]qP[WTBZ]) and nonphotochemical quenching ([WTBX]NPQ[WTBZ]) were measured. The purposes of the study were to analyze and evaluate the effects of different treatments on the chlorophyll fluorescence parameters of[WTBX] Lycium chinense[WTBZ]. The result indicated that the humic acid biochemical compound fertilizer could be used to significantly increase the maximal fluorescence ([WTBX]Fm[WTBZ]), PSⅡ maximal photochemical efficiency ([WTBX]Fv/Fm[WTBZ]), PSⅡ potential activity ([WTBX]Fv/Fo[WTBZ]), apparent rate of electron transfer ([WTBX]ETR[WTBZ]), actual photochemical quantum yield and photochemical quenching coefficient ([WTBX]qP[WTBZ]), thus the nonphotochemical quenching ([WTBX]NPQ[WTBZ]) was reduced. Accordingly, the lamina light energy utilization of [WTBX]L. chinense[WTBZ] was improved, and the photosynthetic productivity was increased. In addition, the improving amplitude of applying 3 kg fertilizer per plant was the highest.