An effective method is developed to reclaim rare earth (RE) metals from spent Fluorescent Lamps. The effects of pH, solid-liquid ratio, stirring intensity and the reaction temperature on leaching process were investigated. The results show that: rare earth trichromatic phosphors contains Y, Eu, Ce, Tb and La, rare earth oxide content is as high as 27.94%; In the experiments, it is found that the rate of rare earth leaching reached 89.85% when the optimum process conditions were as follows: hydrochloric acid concentration of 4.0 mol·L-1, pH of 8.0,solid-liquid ratio of 100 g-1, stirring intensity of 600 rpm, reaction temperature of 60°C and reaction time of 1 h; the rate of rare earth recovery reached 94.98% when the process conditions were ammonia concentration of 33.70 g·L-1, Oxalic acid concentration of 6.25 g·L-1, aging time of 3 h. The obtained RE sample's component is analysed by XRF. XRF investigation shows the product is mainly exists in the form of Y2O3, indicating few impurities phase appeared. The occupation ratio of Y and Eu oxides reaches 99.35% in the RE products.