Abstract: Taking Korla fragrant pear as materials, labor-saving cultivation mode and common cultivation mode were selected to study the effects of cultivation mode on photosynthesis and chlorophyll fluorescence of pear trees suffering from blight disease, in order to provide reference for the prevention, rationalization and high quality planting of pear with stem blight.The results showed that stomatal conductance and transpiration rate of labor-saving cultivation were significantly higher than those of ordinary cultivation.In terms of net photosynthetic rate, from 08:00 to 12:00,the labor-saving cultivation mode was much higher than that of the common cultivation mode.After 12:00,the labor-saving cultivation mode declined to the same level as the common cultivation mode, while the intercellular carbon dioxide concentration was the opposite.In terms of chlorophyll fluorescence, the labor-saving cultivation of fluorescence kinetic curve was higher than that of the common cultivation.In terms of fluorescence parameters, except the initial fluorescence（Fo） and the energy dissipated per unit area（DLo/CSo）,the common cultivation was higher than that of the labor-saving cultivation.Other maximum fluorescence（Fm）,variable fluorescence（Fv）,PSⅡ maximum light conversion efficiency（Fv/Fm）,PSⅡ potential photochemical activity（Fv/Fo）,light energy absorbed per unit area（ABS/CSo）,light energy captured per unit area（TRo/CSo） and quantum yield of electron transport per unit area（ETo/CSo） were all higher under labor-saving cultivation.Therefore, the labor-saving cultivation mode is superior to the common cultivation mode in terms of photosynthetic characteristics and chlorophyll fluorescence.